30. When something is on fire. People throw sand (沙子) on it to put out the fire. The main use of the sand is to ___________.

A. protect the thing on fire.

B. add weight to the thing on fire.

C. keep the air away from the thing on fire.

D. lower the temperature of the thing on fire.

29.-Are you ready to order, sir?

-____________

A. Yeah, probably.　　　　　　　　　　　　 B. No, thanks.　　　　

C. Let me look at the menu first.　　 D. I am afraid I have no time.

28.- How have you been recently?

-So far, so good. I’ve __________ my own company.

A. put out　　　　　　　　 B. put on　　　　　　　 C. put off　　　　　　　　　　 D. put up

27. If you are famous, people will watch you _________ and follow you everywhere.

A. all the time　　　　 B. by the time　　　　 C. on time　　　　　　 D. at times

26.-I’m afraid the meeting has begun.

-Don’t worry. It _______ until the bell ________.

A. doesn’t begin/ rings　　　　　　　　　 B. won’t begin/ will ring

C. won’t begin/ rings　　　　　　　　　　　　　　 D. doesn’t begin/ will ring

25.- You see, a man is cutting a tree on the moon.

- It_________ be true. The teacher says there is no air on the moon.

A. can’t　　　　　　　　　　 B. may not　　　　　　 C. shouldn’t　　　　　 D. mustn’t

24. My mother __________ when I got home.

A. cook　　　　　　　　　　 B. cooks　　　　　　　　 C. cooked　　　　　　　 D. was cooking

23. Which is __________, an elephant or a tiger?

A. strong　　　　　　　　　 B. stronger　　　　　　 C. strongest　　　　　 D. the strongest

22. -How was the evening party yesterday?

-We enjoyed ___________ very much.

　 A. us　　　　　　　　　　　　 B. ourselves　　　　　 C. its　　　　　　　　　　 D. itself