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1 is playing
2 write
3 am talking
4 are watching
5 visits
6 is shinning
7 read
8 is playing
9 do,go
10 gets
11 are going
12 eats
13 jumps
14 does not smoke
15 plays
16 is
17 gets,opens,
18 goes,has
19 cycles
20 goes
1. is playing
2. write
3. am talking
4. are watching
1 . Next year we'll probably hear a lot more about environmental pollution.(Likely)
⇒ In the next few years we'll ..........likely hear.......... a lot more about environmental pollution
2.My sister is traveling to Ho C hi Minh City by plane .(Flying)
⇒My sister ......is flying.................Ho Chi Minh City
3.I need tobuy six pencils.(Dozen)
⇒I need ........half a dozen of........................eggs
4.We do a lot of outdoor activities in summer.(In)
We take .......part in a lot of................outdoor activities in summer
5.she goes to school at six thirty.(half)
⇒She goes ......to school at half past.....................six
1 How many kilos of potatoes would you like?
2 I went fishing but I didn't catch any fish
3 Cook the chicken over low heat for 15 minutes before you serve it
4 Can you tell me how to cook broken rice?
6 He has got an egg but he hasn't got any bread
7 How much rice is left in the electric cooker?
8 Pho is one of the most popular dishes in Vietnam?
21. Why do people usually sing ?
A. They like birds. B. They feel happy.
C. They want to tell a story . D. They like studying music.
22. Which birds sing the most beautiful songs ?
A. Birds in a good temper.
B. Cock birds.
C. Hen birds.
D. Female birds which attract male birds.
23. What warnings does a bird sometimes sing ?
A. A warning to keep away.
B. A warning to come quickly.
C. A warning about the approach of people
D. A warning to stop singing.
24. What do most birds usually do if they cannot sing well ?
A. warn other birds to go away.
B. give their information in another way.
C. find a wife.
D. fly high in the sky.
25. What is one bird's unusual way of attracting a hen bird ?
A. It dances.
B. It spreads out its tail.
C. It searches for a wife.
D. It uses shells and flowers to make a garden.
Dùng phương pháp đánh giá em nhé.
Nếu p = 2 ta có: 2 + 2 = 4 (loại)
Nếu p = 3 ta có: 2 + 3 = 5; 3 + 7 = 7 (thỏa mãn)
Nếu p > 3 ta có
P = 3k + 1 hoặc p = 3k + 2
Nếu p = 3k + 1 thì p + 2 = 3k + 1 + 2 = 3k + 3 ⋮ 3 (là hợp số loại)
Nếu p = 3k + 2 thì p + 4 = 3k + 2 + 4 = 3k + 6 ⋮ 3 (là hợp số loại)
Vậy p = 3 thì p + 2 và p + 4 là số nguyên tố
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Ex7
1 D
2 E
3 F
4 A
5 I
6 J
7 H
8 B
9 G
10 C
Ex8
1 listen
2 share
3 connect
4 equipped
5 tidies
6 help
7 live
8 talk
9 look
10 access