28. The journey around the world took the old sailor nine months, _____ the sailing time was 226 days.　　 A. of which　 　　B. during which　 C. from which　 D. for which

27. ______ is reported in the newspapers, talks between the two countries are making progress.　　 A. It　 　　　 　 B. As　 　　　　C. That　　　 　　 D. What

26. 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

25. She wore, _______ was very uncommon in the country, a red garment.

　　 A. what　　　　　 B. that　　　　　　 C. which　　　　　 D. it

　 =She wore a red garment , _______ was very uncommon in the country.

24. He was hiding behind the door _________ he could see what was happening.

　　 A. which　　　　　 B. from where　　　 C from which　　　 D. where

23. Tom ate more food _______ was good for his health.

　　 A. that　　　　　　 B. as　　　　　　　 C. than　　　　　　 D. which

22.You can buy as many copies of this book ________ you wants.

　　 A. that　　　　　　 B. which　　　　　 C. as　　　　　　　 D. for which

21. I will invite _______ my daughter loves.

　　 A. whoever　　　　 B. whomever　　　　 C. whichever　　　　 D. whatever

20. The farmer uses wood to build a house ________ to store grain.

　　 A. in which　　　 　B. where　　　　　 C. which　　　　　 D. with which

介词+which / whom + v.=形容词短语， 这一形容词短语与形容词从句的关系如下：

a house in which to store grains= a house in which he stores grain= a house where he stores grain

19. a) He is an interesting speaker, and, _______ is more important, he knows his subject thoroughly.

b) He went to the meeting, and, _______ was worse, insisted on speaking.

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