187.Mr. Huang _____ be in Beijing now because I saw him in the park.

A. mustn’t　　 B. can’t　 C. may not　 D. isn’t able to

186. Please don’t get off the bus_____.

A. before it will　 B. till it stops　　 C. after it stops　 D. until it will stop

185. I want to know _____ the old computer.

A. how have you done　　　 B. how you have done

C. what have you done with　 D. what you have done with

184. All is going well,_____?

A. is it　 B. is all　 C. isn’t it　　 D. isn’t all

183. Watching TV too much is bad for your health, _____?

A. do they　 B. is it　　 C. does it　 D. don’t they

182. We have finished our homework.. Let’s go out and play football, _____?

A. will you　　 B. shall we　　 C. shall I　　 D. will I

181.Thank you, I _____ myself last night.

A. do enjoy　　 B. did enjoy　　 C. do enjoyed　 D. didn’t enjoy

180. Your mother looked unhappy last Sunday,______.

A. did she　　 B. didn’t she　　 C. does she　 D. was she

179. You can’t find both Jim Green and his father at home. The

　　 same meaning is “ ______”.

A.　　 Both Jim Green and his father aren’t at work on Sunday.

B.　　　 Neither Jim Green nor his father is at home on Sunday.

C.　　　 Either Jim Green or his father is at home on Sunday.

D.　　 Jim Green and his father are not in on Sunday.

178. All work _____ today, since we have nothing else to do tomorrow.

　　 A. has to do　 B. has to be done　 C. doesn’t be done　　 D. needn’t been done