II.

1. b

2. d

3. a

4. f

5. c

6. e

7. g

8. h

III.

1. am (hiện tại đơn)

2. came (ago => thì quá khứ đơn)

3. haven't met (yet => thì hiện tại hoàn thành)

4. started (QKĐ)

5. have learnt (for + khoảng TG => thì HTHT)

6. didn't understand

7. is improving

8. have just taken

9. pass

10. will move

11. will come

12. haven't seen

13. have never been

14. don't speak

IV.

2. If you get here before eight, we can catch the early train.

3. If it doesn't rain soon, all plants are going to die.

4. If Henry jogs regularly, he might lose weight.

5. If you feel unwell, you should stay in bed.

6. If you hear any news, could you phone me immediately?

7. If you want to speak English fluently, you must practice it more often.

8. If you find chopsticks difficult, you needn't use them.

9. If you want to pass the final exam, you must study hard.

10. If you don't help me, I can't finish this work on time.

II.

1. b 2. d 3. a 4. f 5. c 6. e 7. g 8. h

2. If you get here before eight, we can catch the early train.

3. If it doesn't rain soon, all plants are going to die.

4. If Henry jogs regularly, he might lose weight.

5. If you feel unwell, you should stay in bed.

6. If you hear any news, could you phone me immediately?

7. If you want to speak English fluently, you must practice it more often.

8. If you find chopsticks difficult, you needn't use them.

9. If you want to pass the final exam, you must study hard.

10. If you don't help me, I can't finish this work on time.

III.

1. am

2. came

3. haven't met

4. started

5. have learnt

6. didn't understand

7. is improving

8. have just taken

9. pass

10. will move

11. will come

12. haven't seen

13. have never been

14. don't speak