1.would wear ( if 2)

2.had driven (if 3)

3.would have written (if 3)

4.weren't ( if 2 )

5.will give (if 1)

6.will get

7.speaks

8.will go

9.hadn't phoned

10.had passed

11.had

12.saw

13.paid

14.

15.

1. If 1 were you, I (wear) a raincoat.

=>would wear 

2. If you (drive) carefully, you wouldn't have had the accident.

=>had driven

3. If I'd given him my address, he (write) to me.

=>would have written

4. If he (not be) so greedy, he would be happier.

=>weren't 

5. If you need any more water, I (give) you some. 

=>will give 

6. She always (get) angry if she is teased.

=>will get

7.She will speak to him if he(speak)to her 

=>speaksh

8. I (go) to the cinema if I am not busy this evening.

=>will go

9. If I (not phone) him, we'd have forgotten the match.

=>hadn't phoned

10. She'd have gone to the university if she (pass) the exam.

=>had passed

11. He'd buy a big yach if he (have) enough money.

=>had

12. What would you do if you (see) a dinosaur?

=>saw

13. If the boss (pay) him properly, he'd work well.

=>paid

14. Pollution will increase if we (more) oil and oil.

=>more

15. I (feel) sleepy if I(not have) a big meal.

=>feel/will not have