23. _____of the girls are very nervous.

　　　　 A. four-fifthes　　 B. four-fifths　　　 C. fourth-fifths　　 D. three-third

22. Let me buy ____pencils.

　　　　 A. five thousands　 B. three dozen　 C. six scores of　　　 D. two thousands of

21. Mr Smith used to be ______and now is working in a ___________.

　　　　 A. chemical teacher; chemical works　　　 B. chemist teacher; chemistry works

　　　　 C. chemistry teacher; chemical works　　　 D. teacher of chemicals; chemistry works

19. ____work it is!

　　　　 A. What a good　　　 B. What good　　 C. How good　 D. How good a

　 [　 ] 20 It is ______from here to Beijing.

　　　　 A. two hour ride　　 B. the hour’s ride　　 C. two hours’ rode　 D. two-hour’s ride　

18. There are many ______and ____in the hall.

　　　　 A. woman-doctors; brother-in-laws　　　 B. women-doctors; brothers-in-laws

　　　　 C. women-doctors; brothers-in-law　　　 D. woman-doctors; brother-ins-law

17. My trousers _____too long.　

　　　　　 A pair of trousers _____ too short　　　　　 A. is　 B. are

　　　　　 Two pairs of trousers _____my father’s　

16. Mother has bought her daughter a new -------.

　　　　 A. clothes　　 B. clothing　　 C. dresses　　 D. suit

15.The police ___catching the thief now.

　　　　 A. are　　 B. is　　 C. was　 D. has been

14. This means _____ tried, but it failed.

　　　　 A. has　　 B. have　 C. have been　 D. has been

13. The _____of the cottages were covered with_____.

　　　　 A. roofs, leaves　　 B. roof; leaves　 C. rooves; leaves　 D. rooves, leafs