23．---- They sat still in the room, __________.

---- Why did they do that?

A. drawing the curtain　　　　 B. with the curtain drawn

C. with the curtain drawing　　 D. having the curtain drawn

22．---______, this math problem seemed quite simple to me, but when I tried to work it out, I just couldn’t.

　 ---- There are always things like this, I think.

　 A. On seeing it　　 B. In my opinion　 C. At first sight　 D. On its own

21．　　　　　　 Some experts demanded that children________ time for sleep and play.

　 A. give　　　 B. should give　 C. would be given　　 D. be given

20．　　　　　　 Our school forbids _______, that is to say, we are not allowed ______ at school.

　 A. to smoke; to smoke　　　　　　 B. student’s to smoke; smoking

C. student’s smoking; to smoke　　 D. students’ smoking ; to smoke

19．　　　　　　 ________ this village was extremely poor, the adults felt it was so important to keep the school going.

　 A. So long as　　 B. Even though　　 C. Just as　　 D. Even

18．.The World Wide Web is sometimes jokingly called the World Wide Wait because

　it ________ be very slow.

17．.As is known to all, _____ great scientific achievements may have _______ positive effect on our life as well as society.

　 　A. / ; a　　　 B. the; a　　 C. the; /　　 D. /; /

16．--- Could you do me a favor and take these books to my office?

　 ---- Yes, ________!

　 A. for pleasure　　 B. I could　 C. my pleasure　 D. with pleasure

15.　 I told Mary how to get here, but perhaps I _______ for her.

　 A. had to write it out　　　　　 B. must have written it out

C. should have written it out　 D. ought to write it out

14.　 So faint ________ that no one thought that the ship had been out of order.

　 A. the noise was　 B. was the noise　 C. it was the noise　 D. was it the noise