1. If you study hard, you will pass the Entrance Examination 10

2. If you don't hurry up, you won't catch the bus first

3. If we recycle, we will reduce the garbage

4. If you call the tourist agency, they will explain to you more clearly

5. If you be calm, everything will be alright

6. If you don't be careful, you will cause the accident

7. If you promise return my book next week, I'll let you borrow it

8. If Peter study hard, he will pass the exam

9. If you work too much, you will tired

10.  If he buy recycled products, he can do a part to save the environment

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II/
1. If you study hard, you will pass the entrance examination.
2. If you don't hurry up, you will not catch the first bus.
3. If you recycle, we will reduce the garbage.
4. If you call the tourist agency, they will explain to you move clearly.
5. If you are calm, everything will be alright.
6. If you are careful, you will not cause the accident.
7. If you promise to return the book next week, I'll let you borrow it.
8. If Peter studies hard, he will pass his exam.
9. If you work too much, you will feel tired.
10. If he buys recycled products, he can do a part to save the environment.

11. If you study hard, you will pass the final exam.
12. If we put garbage into the bín, we will minimize pollution.
13. If you are careless, you will fall over the rock.
14. Unless you rest, you will ready be ill.
15. If Joe doesn't change his way, he will end up in prison.
16. We will still go if it rains.
17. I'll finish the work tonight if you like.
18. If the weather is snowy, we won't go to school.
19. Unless you succeed, you will have to try it again.
20. Unless flowers are watered enough, they won't bloom.