13. You will be late if you (not hurry) ________ hurry.

• Answer: don't

14. Unless she (study) ________ studies, she will fail the final exam.

• Answer: studies

15. We (go) ________ will go out if the rain (stop) ________ stops.

• Answer: will go, stops

16. If people (use) ________ used the car all the time, they (make) ________ would make the air dirty.

• Answer: used, would make

17. If we (not, waste) ________ didn't waste so much paper, a lot of trees (save) ________ would be saved.

• Answer: didn't waste, would be saved

18. You (remember) ________ Do you remember all the answers if you're more patient?

• Answer: Do you remember

19. If you see someone throw trash in the class, what (you do) ________ will you do?

• Answer: will you do

20. If people plant more trees, the air (not, pollute) ________ won't be polluted.

• Answer: won't be polluted

21. If today (be) ________ is Sunday, the students (not go) ________ won't go to school.

• Answer: is, won't go

22. If Hoan (be) ________ is 5 years younger, he (look) ________ would look for another job.

• Answer: is, would look

23. They (travel) ________ would travel around the world if they (have) ________ had enough money now.

• Answer: would travel, had

24. If each water (be) ________ were your happiness, I (give) ________ would give you all the oceans in the world.

• Answer: were, would give

25. I (grow) ________ would grow trees everywhere on this planet if each leaf (be) ________ were your happiness.

• Answer: would grow, were

26. If paper (be) ________ were money, I (buy) ________ would buy you anything you like.

• Answer: were, would buy

27. If Diep (have) ________ had Lan's phone number, he (phone) ________ would phone her right away.

• Answer: had, would phone

28. I (stop) ________ would stop loving you if the earth (stop) ________ stopped moving around the sun.

• Answer: would stop, stopped

29. If I (be) ________ were the president now, I (give) ________ would give more jobs for the unemployment.

• Answer: were, would give

30. If I (live) ________ lived in New York now, I (invite) ________ would invite Donald Trump a cup of coffee.

• Answer: lived, would invite