III. 

a. don't like 

b. is/works

c. is going to

d. are_doing / am doing 

e. is

f. is landing

g. is watching / watches 

IV. 

1. noisy

2. bakery

3. teacher

4. teeth

5. sailing

6. five-floor

7. smaller

8. usually 

9. oldest 

10. drives 

16. must ⇒ had to ( có từ yesterday ) 

17. arrange ⇒ arranges ( chia động từ )

REWRITE 

1. They have checked the machines for two hours. ( Qúa khứ: ago ⇒ Hiện tại hoàn thành: for )

2. He has fixed the bicycle for ten minutes. 

3. We have done the test for an hour. 

4. Jack has planted flowers for three hours. 

5. They have built the bridge for two years. 

6. Mai has written the lesson for twenty minutes. 

7. My Vi has counted her lucky money for five minutes. 

8. You have flirted with me for forty minutes. 

9. She has listened to music for fifteen minutes. 

10. Nam Anh has learned English in 1998. 

Hai câu dưới cùng: 

1. d, save 

2. c, send