IV. 

1.C

2.A

3.D

4.B

5.C

1. the tallest

2. walk to

It is a small and quiet village.

D

Nếu có 40 công nhân thì công việc đó sẽ được hoàn thành trong số giờ là:

                        8.30:40=6 (giờ)

                                  Đ/S: 6 giờ

1. have to

2. must

3. shouldn't

4. don't have to

5. should

6. have to

7. mustn't

8. should

9. don't have to

10. should

1. have to follow

2. has to answer

3. don't have to go

4. Will/ have to buy

5. has to recycle

6. doesn't have to come

7. have to wear

8. Will/ have to do

9. don't have to put

10. have to stop

11. Do/ have to take

12. doesn't have to take

13. had to leave

14. didn't have to do

15. don't have to do

1. B

2. C

3. A

4. C

5. A

6. A

7. B

8. B

D

Nếu là T em sẽ thẳng thắn nói với bố mẹ là mình đã mang tiền đi chơi điện tử