Bài 1: Fill in the blank with the right form
1. If I ______(go) out tonight, I ______(go) with my friends.
2. If you ______(stay) up late, you ______(be) exhausted.
3. If I ______(not meet) him today, I ______(phone) him.
4. If Mary ______(come), they ______(be) happy.
5. If we ______(continue) staying here, we ______(be) late.
6. If we ______(go) on holiday this summer, we ______(visit) Tokyo.
7. If it ______(rain) too much, he ______(stay) at home.
8. If the baby ______(eat) all the candies, he ______(feel) sick.
9. If my family ______(not want) to go out, I ______(cook) for dinner.
10. The coffee ______(taste) bad unless you ______(add) the milk.
11. We ______(not win) the match unless he ______(play) with us.
12. If the weather ______(be) nice, we ______(have) a picnic.
13. She ______(be) surprised if her ex-boyfriend ______(get) married.
14. I ______(come) early if I ______(not have) anything to do.
15. He ______(buy) a new car if he ______(have) enough money.
16. If you ______(not come) with me, I ______(not go) to her birthday party.
17. If Lisa ______(forget) doing homework, the teacher ______(give) her a low mark.
18. If we ______(recycle) more, we ______(help) our planet.
19. Unless it ______(be) so expensive, I ______(buy) it.
20. Unless they ______(wear) coats, they ______(feel) cold.