22. ___________ the 2000 Olympic Games will be held in Beijing is not

　　　 known yet.

　　　 A. Whenever　　　　　　 　　　B. If

　　　 C. Whether　　　　　　　　　　 D. That

20. It was not ________ she took off her dark glasses ________ I realized

　　　 she was a famous film star.

　　　 A. when; that　　　　　　 B. until; that

　　　 C. until; when　　　　　　 D. when; then

19. Shortly after the accident, two _______ police were sent to the spot

　　　 to keep order.

　　　 A. dozen of　　　　 B. dozens

　　　 C. dozen　　　　　　 D. dozens of

18. Which is ____________ country, Canada or Australia?

　　　 A. a large　　　　　　　　 B. larger

　　　 C. a larger　　　　　　　 D. the larger

16. -We could have walked to the station; it was so near.

　　　 -Yes. A taxi ________ at all necessary.

　　　 A. wasn't　　　　　　　　　 B. hadn't been

　　　 C. wouldn't be　　　　　 D. won't be

15. There're so many kinds of tape-recorders on sale that I can't make up

　　　 my mind _______ to buy.

　　　 A. what　　　　　　　　　　 B. which

　　　 C. how　　　　　　　　　　 D. where

14. _____________ terrible weather we've been having these days!

　　 A. How a　　　　　　 B. What a

　　 C. How　　　　　　　　 D. What

13. Mr. Zhang gave the textbooks to all the pupils except ________ who

　　　 had already taken them.

　　　 A. the ones　　　　 B. ones　　　　 C. some　　　　 D. the others

11. How _________ can you finish the drawing?

　　　 A. often　　　　　 B. soon

　　　 C. long　　　　　　 D. rapid

10. The doctor will be free ___________.

　　　 A. 10 minutes later　　　　 B. after 10 minutes

　　　 C. in 10 minutes　　　　　　 D. 10 minutes after