Choose the correct answer for each following question.
1. If you ……………….……with your dictionary, I ‘d like to borrow it.
2. If you …………too hot during the night, turn down the central heating.
3. If you…………………………Tom, tell him I have a message for him.
4. If Peter …………………, Sarah will be sad because she wants to meet him very much.
5. If you stay up late the previous night, you ………. sleepy the next morning.
6. Trees won’t grow ……………………... there is enough water.
7. If you had the chance, ……………………………… you go finishing?
8. If you ……………..…. time, please write to me.
9. If it ………………... convenient, let’s go out for a drink tonight.
10. If I had enough money, I …………………… abroad to improve my English.
