Exercise 8. Put one verb in each sentence into the present simple and the other verb into the future simple.

1. If I (fail)…………………………………………………….the exam, I (take) it again.
2. When I (see)…………………………………………..him, I give him your message.
3. I buy a new car as soon as I (have)………………………………….enough money.
4. If the weather (be…………………. nice tomorrow, we (go)…………………sailing.
5. I (look after)……………………….your cat while you (be)……………….on holiday.
6. He (not / do)…………………….anything until he (hear)…………………….from us.
7. The door (not / open)……………………..unless you (push)………………….it hard.
8. We (play)…………………….tennis this evening as long as it (not / rain)…………
9. I (lend)…………………..you the money provided you (pay)……………….me back tomorrow.
10. There is a surprise waiting for him when he (get)……………………………..home.
11. Before you (leave)………………………I (give)…………………………………….you your present back.
12. If you (feel)…………………….better this afternoon, we (drive)…………………to the coast.
13. If I (be)………………………lucky, I (get in)………………………..without a ticket.
14. I (phone)……………….you when I (get)……………………………home from work.
15. I want to see Julia before she (go)…………………………..out.
16. We are going on holiday tomorrow. I (tell)………………..you all about it when we (come back)…………………………………. .
17. I don’t want to go without you. I (wait)………………………until you (be)…………………………..ready.
18. She has applied for the job, but she isn’t very well-qualified for it. I (be)…………………………. surprised if she (get)…………………………………….it.
19. I hope to play tennis tomorrow if the weather (be)…………………………….nice.
20. I’m going out now. If anybody (phone)…………………while I (be)…………….out, can you take a message?

Exercise 9. Fill in the blanks with – if / unless –

1. You’ll never pass your driving test………………………….you don’t work harder.
2. You won’t pass your test……………………………………you drive more carefully.
3. We won’t go to the beach tomorrow………………it is raining.
4. We’ll go to the beach tomorrow …………………it isn’t raining.
5. ……………we hurry, we’ll miss the train.
6. ……………we don’t hurry, we’ll miss the train.
7. We’ll catch the train…………….we hurry.
8. …………….this team doesn’t start winning soon, nobody will pay to watch them.
9. ……………they start working harder, they will lose again.
10. You can’t see the game………………you’ve got a ticket.
11. You can see the game……………….you have a ticket.
12. You can’t borrow this book……………you have returned the one you took last month.
13. She will come to see us next month…………….she has problems with her work.