Ex9

1 workers

2 clocks

3 desks

4 erasers 

5 pencils

6 teachers

7 doctors

8 couches

9 telephones

10 families

11 oranges

12 cities

13 kites

14 doors

15 books

16 schools

17 houses

18 classrooms

19 engineers

20 brothers

21 watches

22 benches

23 televisions

24 countries

25 bikes

26 knives

27 windows

28 bags

29 rulers

30 pens

31 students

32 chairs

33 nurses

34 lamps

35 tables

36 buses

37 cars

38 babies

39 leaves

Ex5

1 These are armchairs

2 We are students

3 They are couches

4 There are lakes near the house

5 What are these? They are flies

6 What are those? Those are bookshelves 

7 Those are erasers

bài dễ thế mà cx phải hỏi, tự nghĩ đi

Ex4

1 has

2 am not solving

3 comes

4 begins

5 do you wake up

6 are you doing

7 don't work - am working

8 is not sleeping

9 do you review

10 is working

11 takes

12 is

Ex5

1 more exciting

2 more fantastic

3 better

4 faster

5 more valuable

6 larger

7 easier

8 farther

9 bigger

10 taller

11 longer

12 more dangerous

13 luckier

14 bigger - cheaper

15 more famous

Ex1

1 A

2 D

3 A

4 A

5 A

Ex2

1 A

2 A

3 A

3 C

4 A

Ex3

1 A

2 B

3 C

4 B

5 A

6 D

7 B

8 B

9 A

10 C

11 D

12 C

13 A

14 C

15 D

16 C

17 A

18 B

19 A

20 D

21 C

22 B

a. You

Me happy, you happy, we happy

1 B

2 D

3 B

4 A

5 B

6 C

7 A

Prepare a map or we will be lost soon

1 interesting

2 natural

3 well

4 discussion

5 chilhood

6 dangerous

7 information

8 tourist

9 comfortable 

10 cheaper

cảm ơn ạ

Ex8

1 than

2 than

3 as

4 as

5 as

6 than

7 than

8 as

Ex9

2 A mile is farther than a kilometer

3 The sky blue is paler than a navy blue

4 A dolphin is cleverer than a snake

5 Gold is more valuable than silver

6 Yoga is more relaxing than football

7 Wind energy is cleaner than nuclear energy

8 A billionaire is richer than a millionaire

Ex10

1 from

2 peaceful

3 flowers

4 for

5 however

6 carpet

7 often

8 warer

9 path

10 fresh

Ex11

1 interesting

2 natural

3 well

4 discussion

5 childhood

6 dangerous

7 information

8 tourist

9 comfortable 

10 cheaper 

Ex6

1 to eat

2 any

3 to do

4 is going to visit

5 is driving

6 must

7 much

8 going

9 a

10 to have

11 many

12 dozen

Giá hạ so với giá chiếm số phần trăm là: 100% - 15% = 85% (giá)

Giá hạ so với vốn chiếm số phần trăm là: 100% + 36% = 136% (vốn)

Ta có: 85% giá = 136% vốn 

Giá so với vốn chiếm số phần trăm là: 136% : 85% = 160% (vốn)

Lãi dự định so với vốn chiếm số phần trăm là:

       160%  - 100% = 60% (vốn)

Giá vốn là: 24 000 000 : 60 x 100 =  40 000 000 (đồng)

Thực tế cửa hàng lãi là: 40 000 000 x 36:100 = 14 400 000 (đồng)

Đáp số: