21. There were dirty marks on her trousers ______ she had wiped her hands.(NMET 2004-2) 　 A. where　 　　　　　B. which 　　　　　C. when 　　　　　D. that 22. The journey around the world took the old sailor nine months, _____ the sailing time 　

was 226 days.　　　　　　　　　　　　　　　　　　　　　　　　　　　　 (NMET2004-3) 　 　A. of which　　 　　B. during which 　　C. from which 　　D. for which　 23. There are altogether eleven books on the shelf, ______five are mine.(NMET2004-4)

A. on which 　　　　B. in which　　　 　C. of which　　 　　D. from which

20. The English play _______ my students acted at the New Year's party was a great success. 　 A. for which 　　　B. at which 　　　　C. in which 　　　D. on which　 (NMET2004-1)

19. We are living in an age_____ many things are done on computer.　 (2003Spring)

A. which　　　　 　B. that 　　　　　　C. whose 　　　　　D. when

18. York, _______ last year, is a nice old city.　　　　　 　　　　　(2003Beijing)

A. that 1 visited　 B. which I visited C. where 1 visited D. in which 1 visited

17. There is a new problem involved in the popularity of private cars ____ road conditions need ____.　　　　　　　　　　　　　　　　　　　　　　　　 　　　　(2003Shanghai)

A. that…to be improved　　　　　 　　B. which…to be improved

C. where…improving　　　　　　 　　D. when…improving 　

16. I can think of many cases ____ students obviously knew a lot of English words and expressions but couldn't write a good essay.　　　　　　　 　　　　(2003Shanghai)

A. why　　　　　 B. which　　　 　　　C. as　　　　　　 　D. where

15. There's a feeling in me _______ we'll never know what a UFO is -- not ever.

A. that　　 　 B. which　　　 　　 C. of which　　　 D. what　　 (2002Shanghai)

14. Alec asked the policeman ________he worked to contact him whenever there was an accident.　 A. with him 　　　　 B. who 　　　　 C. with whom 　　 D. whom 　　(2002Shanghai)

13. The famous basketball star, 　　　tried to make a comeback, attracted a lot of attention. A. where　 　B. when 　　C. which　 　　　　D. Who　　　 (2002spring)

12. There's a feeling in me _______ we'll never know what a UFO is -- not ever.

A. that　　 　 B. which　　　 　　 C. of which　 　　 D. what　　　 (2002Shanghai)