I. Put the verbs in brackets into the correct tenses (Chia động từ trong ngoặc):

1. The table will collapse if you (stand) on it.

2. I’ll be very angry if he (make) any more mistakes.

3. If he (be) late, we’ll go without him.

4. What will happen if my parachute (not open)?

5. If she (need) a radio, she can borrow mine.

6. If he goes on telling lies, nobody (believe) a word he says.

7. If I have a typewriter, I (type) it myself.

8. If I (know) his address I’ll give it to you.

9. He (look) a lot better if he shaves more often.

10. If he works more slowly, he (not make) so many mistakes.

11. I can get a job easily if I (have) a degree.

12. He may get fat if he (stop) smoking.

13. If I know that you are in hospital I (visit) you.

14. If you (arrive) ten minutes earlier you will have a seat.

15. I won’t believe it if I (not see) it with my own eyes.