1. If you don't keep silent, you will wake the baby up. 

2. If you don't stop talking, you won't understand the lesson. 

3. If i knew her phone number, i would ring her up. 

4. If i knew the answer, i could tell you. 

5. If we had had a map, we wouldn't have got lost. 

6, If Susan hadn't eaten four cream cakes, she wouldn't have felt sick. 

7. If it hadn’t been for this treatment, the patient would have died.

8. If he hadn't been late every day, we wouldn't have lost his job. 

9. If he Peter didn't eat so many chips, we wouldn't be fat. 

10. If Robert hadn't started smoking cigarettes, he wouldn't have got a bad cough. 

***

1. Unless you like this one, I will bring you another. 

2. Unless she hurries, she will be late. 

3. Unless you are careful, you will cut yourself. 

4, Unless you had sneezed, he wouldn't have known that we were there. 

***

1. had

2. would have visited

3. attended

4. knew

5. had arrived

6, studies

7. doesn't hurry

8. see

9. had spoken

10. would you do

11. will be

12. would come

13, rang

14. would have fed

15. didn't rain

16. were

17. would have written

18. had played- would have won

19. did

Bn học tốt!!