Use the right form of the verb (First Conditional): 1. If you (to put) salt on ice, it will melt.
2. If he ( to leave) now, he will miss the rush hour.
3. Provided that she (to service) the car, we’ll be able to drive to the country.
4. Unless he (to do) his homework, he’ll stay at home.
5. They will let us know if they ( to see) him.
6. They all (to be surprised) if I make such a mistake.
7. If he doesn’t come in time, we (to wait) for him?
8. If I (not to be busy), I shall go to the concert.
9. If no one (to come) to help, we shall be obliged to do the work ourselves.
10. If you (to put) on your glasses, you will see better.
11. What shall we do if they (to be late)?
12. Will he be very displeased if I (not to ring) him up?
13. If you (to give) me your address, I shall write you a letter.
14. If my sister doesn’t go to the south, we ( to spend) the summer together.
15. If it (to rain), we shall have to stay at home.
1 you put
2 he leaves
3 she services
4 he does
5 they see
6 they all will be surprised
7 will we wait for him
8 if i am not busy
9 if no one comes to help
10 you put on
11 they are late
12 I don't ring him up
13 if you give me
14 we will spend
15 if it rains
Объяснение: