Bài 2:

1. won't

2. want

3. If

4. unless

5. if

6. doesn't

7. unless

8. If

9. If

10. unless

11. unless

12. Unless

13. Unless

14. if

Bài 3:

1. send - will receive

2. do - will improve

3. find - will give

4. will go - has

5. will go - gets 

6. doesn't phone - will leave 

7. don't study - won't pass

8. rains - won't have to

9. won't be able to - watch 

10. cannot move - isn't.

Bài 2 

1A

2B

3B

4A

5B

6B

7A

8B

9B

10A

11B

12A

13B

14A

15A

Baif 3

1.spend/will receive
2.do/will improve
3.find/will give
4.will go /has
5.will go/gets
6.doesnt phone/will leave
7.dont study/wont pass
8.rains/wont have to

9.wont be able to/ watch
10.cannot move / isnt