K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

Exercise 4: Complete the passage with the verbs in past simple or past continuous.In my last holiday, I went to Hawaii. When I (go) 1………………… to the beach for the first time, something wonderful happened. I (swim) 2……………… in the sea while my mother was sleeping in the sun. My brother was building a castle and my father (drink) 3………………… some water. Suddenly I (see) 4…………………………. a boy on the beach. His eyes were blue like the water in the sea and his hair (be) 5……………… beautiful black. He was very...
Đọc tiếp

Exercise 4: Complete the passage with the verbs in past simple or past continuous.

In my last holiday, I went to Hawaii. When I (go) 1………………… to the beach for the first time, something wonderful happened. I (swim) 2……………… in the sea while my mother was sleeping in the sun. My brother was building a castle and my father (drink) 3………………… some water. Suddenly I (see) 4…………………………. a boy on the beach. His eyes were blue like the water in the sea and his hair (be) 5……………… beautiful black. He was very tall and thin and his face was brown. My heart (beat) 6…………………………. fast. I (ask) 7…………………………. him for his name with a shy voice. He (tell) 8…………………………. me that his name was John. He (stay) 9…………………………. with me the whole afternoon. In the evening, we met again. We ate pizza in a restaurant. The following days we (have) 10…………………………. a lot of fun together. At the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him

1
25 tháng 2 2023

1.went

2.was swimming

3.was drinking

4.saw

5.was

6.was beating

7.asked

8.told

9.stayed

10.had

Exercise 1: Chia các động từ trong ngoặc ở thì Quá khứ đơn hoặc Quá khứ tiếp diễn.In my last holiday, I went to Hawaii. When I (go) 1…………to the beach for the first time, something wonderful happened. I (swim) 2…………in the sea while my mother was sleeping in the sun. My brother was building a castle and my father (drink) 3 some water. Suddenly I (see) 4…………a boy on the beach. His eyes were blue like the water in the sea and his hair (be) 5…………beautiful black. He was very tall...
Đọc tiếp

Exercise 1: Chia các động từ trong ngoặc ở thì Quá khứ đơn hoặc Quá khứ tiếp diễn.

In my last holiday, I went to Hawaii. When I (go) 1…………to the beach for the first time, something wonderful happened. I (swim) 2…………in the sea while my mother was sleeping in the sun. My brother was building a castle and my father (drink) 3 some water. Suddenly I (see) 4…………a boy on the beach. His eyes were blue like the water in the sea and his hair (be) 5…………beautiful black. He was very tall and thin and his face was brown. My heart (beat) 6…………fast. I (ask) 7…………him for his name with a shy voice. He (tell) 8…………me that his name was John. He (stay) 9…………with me the whole afternoon. In the evening, we met again. We ate pizza in a restaurant. The following days we (have) 10…………a lot of fun together. At the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him.

Exercise 2: Chọn đáp án đúng

1.     We …… on the lake when it started to rain so we went home.

A. finished            B. finishing          C. were finishing            D. are finishing

2.     My dad found some money while he …… his suitcase.

A. packing            B. package           C. are packing                D. was packing

3.     My brother ……… in Ireland when he met his girlfriend.

A. study               B. was studying   C. were study                 D. was study

4.     My grandma tried pizza for the first time while she ………. in Italy.

A. staying             B. is staying         C. is stayed                              D. was staying

5.     My mom ………. in the sea when she saw a dolphin.

A. was swimming          B. was swiming    C. were swimming         D. were swiming

6.     ……. it ……. when you woke up this morning?

A. Is….raining     B. was ….. raining         C. is….rain                             D.were…… raining

7.     What …….. when the teacher came?

A. were you doing         B. was you doing C. are you doing            D. are you doing

8.     What did you watch on TV while you …….. dinner yesterday?

A. were having     B. was having      C. were haveing             D. was haveing

9.     The man ………. his letter in the post office at that time.

A. is sending        B. was sending     C. sending            D. was senting

10.                It ………and cloudy when we left Ireland.

A. was rain                    B. was raining      C. is raining          D. rainingExercise 1: Chia các động từ trong ngoặc ở thì Quá khứ đơn hoặc Quá khứ tiếp diễn.

In my last holiday, I went to Hawaii. When I (go) 1…………to the beach for the first time, something wonderful happened. I (swim) 2…………in the sea while my mother was sleeping in the sun. My brother was building a castle and my father (drink) 3 some water. Suddenly I (see) 4…………a boy on the beach. His eyes were blue like the water in the sea and his hair (be) 5…………beautiful black. He was very tall and thin and his face was brown. My heart (beat) 6…………fast. I (ask) 7…………him for his name with a shy voice. He (tell) 8…………me that his name was John. He (stay) 9…………with me the whole afternoon. In the evening, we met again. We ate pizza in a restaurant. The following days we (have) 10…………a lot of fun together. At the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him.

Exercise 2: Chọn đáp án đúng

1.     We …… on the lake when it started to rain so we went home.

A. finished            B. finishing          C. were finishing            D. are finishing

2.     My dad found some money while he …… his suitcase.

A. packing            B. package           C. are packing                D. was packing

3.     My brother ……… in Ireland when he met his girlfriend.

A. study               B. was studying   C. were study                 D. was study

4.     My grandma tried pizza for the first time while she ………. in Italy.

A. staying             B. is staying         C. is stayed                              D. was staying

5.     My mom ………. in the sea when she saw a dolphin.

A. was swimming          B. was swiming    C. were swimming         D. were swiming

6.     ……. it ……. when you woke up this morning?

A. Is….raining     B. was ….. raining         C. is….rain                             D.were…… raining

7.     What …….. when the teacher came?

A. were you doing         B. was you doing C. are you doing            D. are you doing

8.     What did you watch on TV while you …….. dinner yesterday?

A. were having     B. was having      C. were haveing             D. was haveing

9.     The man ………. his letter in the post office at that time.

A. is sending        B. was sending     C. sending            D. was senting

10.                It ………and cloudy when we left Ireland.

A. was rain                    B. was raining      C. is raining          D. raining

1
16 tháng 7 2023

Exercise 1: Chia các động từ trong ngoặc ở thì Quá khứ đơn hoặc Quá khứ tiếp diễn.

In my last holiday, I went to Hawaii. When I (go) was going to the beach for the first time, something wonderful happened. I (swim) was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father (drink) was drinking some water. Suddenly I (see)saw a boy on the beach. His eyes were blue like the water in the sea and his hair (be) was beautiful black. He was very tall and thin and his face was brown. My heart (beat) beat fast. I (ask) asked him for his name with a shy voice. He (tell) told me that his name was John. He (stay) stayed with me the whole afternoon. In the evening, we met again. We ate pizza in a restaurant. The following days we (have) had a lot of fun together. At the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him.

Exercise 2: Chọn đáp án đúng

1.     We …… on the lake when it started to rain so we went home.

A. finished            B. finishing          C. were finishing            D. are finishing

2.     My dad found some money while he …… his suitcase.

A. packing            B. package           C. are packing                D. was packing

3.     My brother ……… in Ireland when he met his girlfriend.

A. study               B. was studying   C. were study                 D. was study

4.     My grandma tried pizza for the first time while she ………. in Italy.

A. staying             B. is staying         C. is stayed                              D. was staying

5.     My mom ………. in the sea when she saw a dolphin.

A. was swimming          B. was swiming    C. were swimming         D. were swiming

6.     ……. it ……. when you woke up this morning?

A. Is….raining     B. was ….. raining         C. is….rain                             D.were…… raining

7.     What …….. when the teacher came?

A. were you doing         B. was you doing C. are you doing            D. are you doing

8.     What did you watch on TV while you …….. dinner yesterday?

A. were having     B. was having      C. were haveing             D. was haveing

9.     The man ………. his letter in the post office at that time.

A. is sending        B. was sending     C. sending            D. was senting

10.                It ………and cloudy when we left Ireland.

A. was rain                    B. was raining      C. is raining          D. raining

#\(Cụt\)

#\(yGLinh\)

16 tháng 7 2023

EX1

1 went

Chia động từ ở thì quá khứ đơn và thì quá khứ tiếp diễn: In my last holiday, I went to Hawaii. When I 1(go)............. to the beach for the first time, something wonderful happened. I 2(swim) .............. in the sea while my mother was sleeping in the sun. My brother was building a castle and my father 3(drink)............. some water. Suddenly I 4.(see)............. a boy on the beach. His eyes were blue like the water in the sea and his hair 5(be) .............. beautiful...
Đọc tiếp

Chia động từ ở thì quá khứ đơn và thì quá khứ tiếp diễn:

 In my last holiday, I went to Hawaii. When I 1(go)............. to the beach for the first time, something wonderful happened. I 2(swim) .............. in the sea while my mother was sleeping in the sun. My brother was building a castle and my father 3(drink)............. some water. Suddenly I 4.(see)............. a boy on the beach. His eyes were blue like the water in the sea and his hair 5(be) .............. beautiful black. He was very tall and thin and his face was brown. My heart 6(beat).......... fast. I 7.(ask)........... him for his name with a shy voice. He 8.(tell)............ me that his name was John. He 9.(stay) ........... with me the whole afternoon. In the evening, we met again. We ate pizza in a restaurant. The following days we 10(have) ............... a lot of fun together. At the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him.

3
11 tháng 3 2021

Chia động từ ở thì quá khứ đơn và thì quá khứ tiếp diễn:

 In my last holiday, I went to Hawaii. When I 1(go).....went........ to the beach for the first time, something wonderful happened. I 2(swim) ......was swimming........ in the sea while my mother was sleeping in the sun. My brother was building a castle and my father 3(drink)....was drinking......... some water. Suddenly I 4.(see).........saw.... a boy on the beach. His eyes were blue like the water in the sea and his hair 5(be) ..........was.... beautiful black. He was very tall and thin and his face was brown. My heart 6(beat)......was beating.... fast. I 7.(ask).....asked...... him for his name with a shy voice. He 8.(tell)...told......... me that his name was John. He 9.(stay) ....stayed....... with me the whole afternoon. In the evening, we met again. We ate pizza in a restaurant. The following days we 10(have) .........had...... a lot of fun together. At the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him.

11 tháng 3 2021

1 went

2 was swimming

3 was drinking

4saw

5 was

6beated

7 asked

8 told

9 stayed

10 had

14.07.2023 HOMEWORKExercise 1: Chia các động từ trong ngoặc ở thì Quá khứ đơn hoặc Quá khứ tiếp diễn.In my last holiday, I went to Hawaii. When I (go) 1…………to the beach for the first time, something wonderful happened. I (swim) 2…………in the sea while my mother was sleeping in the sun. My brother was building a castle and my father (drink) 3 some water. Suddenly I (see) 4…………a boy on the beach. His eyes were blue like the water in the sea and his hair (be) 5…………beautiful...
Đọc tiếp

14.07.2023 HOMEWORK

Exercise 1: Chia các động từ trong ngoặc ở thì Quá khứ đơn hoặc Quá khứ tiếp diễn.

In my last holiday, I went to Hawaii. When I (go) 1…………to the beach for the first time, something wonderful happened. I (swim) 2…………in the sea while my mother was sleeping in the sun. My brother was building a castle and my father (drink) 3 some water. Suddenly I (see) 4…………a boy on the beach. His eyes were blue like the water in the sea and his hair (be) 5…………beautiful black. He was very tall and thin and his face was brown. My heart (beat) 6…………fast. I (ask) 7…………him for his name with a shy voice. He (tell) 8…………me that his name was John. He (stay) 9…………with me the whole afternoon. In the evening, we met again. We ate pizza in a restaurant. The following days we (have) 10…………a lot of fun together. At the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him.

Exercise 2: Chọn đáp án đúng

1.     We …… on the lake when it started to rain so we went home.

A. finished            B. finishing          C. were finishing            D. are finishing

2.     My dad found some money while he …… his suitcase.

A. packing            B. package           C. are packing                D. was packing

3.     My brother ……… in Ireland when he met his girlfriend.

A. study               B. was studying   C. were study                 D. was study

4.     My grandma tried pizza for the first time while she ………. in Italy.

A. staying             B. is staying         C. is stayed                              D. was staying

5.     My mom ………. in the sea when she saw a dolphin.

A. was swimming          B. was swiming    C. were swimming         D. were swiming

6.     ……. it ……. when you woke up this morning?

A. Is….raining     B. was ….. raining         C. is….rain                             D.were…… raining

7.     What …….. when the teacher came?

A. were you doing         B. was you doing C. are you doing            D. are you doing

8.     What did you watch on TV while you …….. dinner yesterday?

A. were having     B. was having      C. were haveing             D. was haveing

9.     The man ………. his letter in the post office at that time.

A. is sending        B. was sending     C. sending            D. was senting

10.                It ………and cloudy when we left Ireland.

A. was rain                    B. was raining      C. is raining          D. raining

 

1
16 tháng 7 2023

Exercise 1: Chia các động từ trong ngoặc ở thì Quá khứ đơn hoặc Quá khứ tiếp diễn.

In my last holiday, I went to Hawaii. When I (go) went to the beach for the first time, something wonderful happened. I (swim) was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father (drink) was drinking some water. Suddenly I (see) saw a boy on the beach. His eyes were blue like the water in the sea and his hair (be) was beautiful black. He was very tall and thin and his face was brown. My heart (beat)beat fast. I (ask) asked him for his name with a shy voice. He (tell) told me that his name was John. He (stay)stayed with me the whole afternoon. In the evening, we met again. We ate pizza in a restaurant. The following days we (have)had a lot of fun together. At the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him.

Exercise 2: Chọn đáp án đúng

1.     We …… on the lake when it started to rain so we went home.

A. finished            B. finishing          C. were finishing            D. are finishing

2.     My dad found some money while he …… his suitcase.

A. packing            B. package           C. are packing                D. was packing

3.     My brother ……… in Ireland when he met his girlfriend.

A. study               B. was studying   C. were study                 D. was study

4.     My grandma tried pizza for the first time while she ………. in Italy.

A. staying             B. is staying         C. is stayed                              D. was staying

5.     My mom ………. in the sea when she saw a dolphin.

A. was swimming          B. was swiming    C. were swimming         D. were swiming

6.     ……. it ……. when you woke up this morning?

A. Is….raining     B. was ….. raining         C. is….rain                             D.were…… raining

7.     What …….. when the teacher came?

A. were you doing         B. was you doing C. are you doing            D. are you doing

8.     What did you watch on TV while you …….. dinner yesterday?

A. were having     B. was having      C. were haveing             D. was haveing

9.     The man ………. his letter in the post office at that time.

A. is sending        B. was sending     C. sending            D. was senting

10.                It ………and cloudy when we left Ireland.

A. was rain                    B. was raining      C. is raining          D. raining

#\(Cụt\)

#\(yGLinh\)

Choose the letter A, B, C or D to complete the passage belowIn my last holiday, I went to Hawaii. When I went _________ (6) the beach for the first time, something wonderful happened. I was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father _________ (7) some wine. Suddenly I _________ (8) a boy on the beach. His eyes were blue _________ (9) the water in the sea and his hair was beautiful black. He was very tall _________ (10) thin. My...
Đọc tiếp

Choose the letter A, B, C or D to complete the passage below

In my last holiday, I went to Hawaii. When I went _________ (6) the beach for the first time, something wonderful happened. I was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father _________ (7) some wine. Suddenly I _________ (8) a boy on the beach. His eyes were blue _________ (9) the water in the sea and his hair was beautiful black. He was very tall _________ (10) thin. My heart beat fast. I asked him for _________ (11) name with a shy voice. He told me _________ (12) his name was John. He stayed _________ (13) me the whole afternoon. In the evening, we met again. We _________ (13) pizza in a restaurant. The following days we had _________ (14) fun together. _________ (15) the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him. We continued to be good friends.

Question 9:

A. like

B. as

C. same

Dsimilar

1
21 tháng 1 2018

Đáp án: A

Giải thích: like + N: giống như

Dịch: Mắt cậu ấy xanh như nước biển

Choose the letter A, B, C or D to complete the passage belowIn my last holiday, I went to Hawaii. When I went _________ (6) the beach for the first time, something wonderful happened. I was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father _________ (7) some wine. Suddenly I _________ (8) a boy on the beach. His eyes were blue _________ (9) the water in the sea and his hair was beautiful black. He was very tall _________ (10) thin. My...
Đọc tiếp

Choose the letter A, B, C or D to complete the passage below

In my last holiday, I went to Hawaii. When I went _________ (6) the beach for the first time, something wonderful happened. I was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father _________ (7) some wine. Suddenly I _________ (8) a boy on the beach. His eyes were blue _________ (9) the water in the sea and his hair was beautiful black. He was very tall _________ (10) thin. My heart beat fast. I asked him for _________ (11) name with a shy voice. He told me _________ (12) his name was John. He stayed _________ (13) me the whole afternoon. In the evening, we met again. We _________ (13) pizza in a restaurant. The following days we had _________ (14) fun together. _________ (15) the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him. We continued to be good friends.

Question 11:

A. him

B. his

C. he

Dhimself

1
19 tháng 2 2018

Đáp án: B

Giải thích: tính từ sở hữu his + N

Dịch: Tôi hỏi tên cậu ấy.

Choose the letter A, B, C or D to complete the passage belowIn my last holiday, I went to Hawaii. When I went _________ (6) the beach for the first time, something wonderful happened. I was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father _________ (7) some wine. Suddenly I _________ (8) a boy on the beach. His eyes were blue _________ (9) the water in the sea and his hair was beautiful black. He was very tall _________ (10) thin. My...
Đọc tiếp

Choose the letter A, B, C or D to complete the passage below

In my last holiday, I went to Hawaii. When I went _________ (6) the beach for the first time, something wonderful happened. I was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father _________ (7) some wine. Suddenly I _________ (8) a boy on the beach. His eyes were blue _________ (9) the water in the sea and his hair was beautiful black. He was very tall _________ (10) thin. My heart beat fast. I asked him for _________ (11) name with a shy voice. He told me _________ (12) his name was John. He stayed _________ (13) me the whole afternoon. In the evening, we met again. We _________ (13) pizza in a restaurant. The following days we had _________ (14) fun together. _________ (15) the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him. We continued to be good friends.

Question 13:

Awith

Bfor

C. of

D. on

1
3 tháng 5 2017

Đáp án: A

Giải thích: cụm từ stay with sb: ở cùng với ai

Dịch: Cậu ấy ở lại cùng với tôi cả tối.

Choose the letter A, B, C or D to complete the passage belowIn my last holiday, I went to Hawaii. When I went _________ (6) the beach for the first time, something wonderful happened. I was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father _________ (7) some wine. Suddenly I _________ (8) a boy on the beach. His eyes were blue _________ (9) the water in the sea and his hair was beautiful black. He was very tall _________ (10) thin. My...
Đọc tiếp

Choose the letter A, B, C or D to complete the passage below

In my last holiday, I went to Hawaii. When I went _________ (6) the beach for the first time, something wonderful happened. I was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father _________ (7) some wine. Suddenly I _________ (8) a boy on the beach. His eyes were blue _________ (9) the water in the sea and his hair was beautiful black. He was very tall _________ (10) thin. My heart beat fast. I asked him for _________ (11) name with a shy voice. He told me _________ (12) his name was John. He stayed _________ (13) me the whole afternoon. In the evening, we met again. We _________ (13) pizza in a restaurant. The following days we had _________ (14) fun together. _________ (15) the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him. We continued to be good friends.

Question 15:

A. In

B. For

C. To

D. At

1
12 tháng 10 2018

Đáp án: D

Giải thích: cụm từ “at the end of”: ở cuối

Dịch: Cuối kì nghỉ, tôi rời Hawaii và nói lời tạm biệt với John.

Choose the letter A, B, C or D to complete the passage belowIn my last holiday, I went to Hawaii. When I went _________ (6) the beach for the first time, something wonderful happened. I was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father _________ (7) some wine. Suddenly I _________ (8) a boy on the beach. His eyes were blue _________ (9) the water in the sea and his hair was beautiful black. He was very tall _________ (10) thin. My...
Đọc tiếp

Choose the letter A, B, C or D to complete the passage below

In my last holiday, I went to Hawaii. When I went _________ (6) the beach for the first time, something wonderful happened. I was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father _________ (7) some wine. Suddenly I _________ (8) a boy on the beach. His eyes were blue _________ (9) the water in the sea and his hair was beautiful black. He was very tall _________ (10) thin. My heart beat fast. I asked him for _________ (11) name with a shy voice. He told me _________ (12) his name was John. He stayed _________ (13) me the whole afternoon. In the evening, we met again. We _________ (13) pizza in a restaurant. The following days we had _________ (14) fun together. _________ (15) the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him. We continued to be good friends.

Question 14:

A. many

B. a lot of 

C. a number of

D. plenty

1
9 tháng 9 2019

Đáp án: B

Giải thích: a lot of + danh từ không đếm được: nhiều…

Dịch: chúng tôi chơi với nhau rất vui.

Choose the letter A, B, C or D to complete the passage belowIn my last holiday, I went to Hawaii. When I went _________ (6) the beach for the first time, something wonderful happened. I was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father _________ (7) some wine. Suddenly I _________ (8) a boy on the beach. His eyes were blue _________ (9) the water in the sea and his hair was beautiful black. He was very tall _________ (10) thin. My...
Đọc tiếp

Choose the letter A, B, C or D to complete the passage below

In my last holiday, I went to Hawaii. When I went _________ (6) the beach for the first time, something wonderful happened. I was swimming in the sea while my mother was sleeping in the sun. My brother was building a castle and my father _________ (7) some wine. Suddenly I _________ (8) a boy on the beach. His eyes were blue _________ (9) the water in the sea and his hair was beautiful black. He was very tall _________ (10) thin. My heart beat fast. I asked him for _________ (11) name with a shy voice. He told me _________ (12) his name was John. He stayed _________ (13) me the whole afternoon. In the evening, we met again. We _________ (13) pizza in a restaurant. The following days we had _________ (14) fun together. _________ (15) the end of my holidays when I left Hawaii I said good-bye to John. We had tears in our eyes. He wrote to me a letter very soon and I answered him. We continued to be good friends.

Question 8:

A. see

B. saw

C. was seen

D. is seeing

1
23 tháng 12 2018

Đáp án: B

Giải thích: câu tường thuật thời quá khứ đơn

Dịch: Đột nhiên tôi thấy 1 cậu con trai trên bãi biển