32. ________ is often the case, 　we have worked out the production plan.

　　 A. Which　　　　 B. When　　　　　 C. What　　　　　 D. As

31. Helen was much kinder to her youngest son than to the others ,　　　 　, of course , made the others envy him .

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

30. There were dirty marks on her trousers ______ she had wiped her hands.

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

29. I work in a business　　 　　　almost everyone is waiting for a great chance.

A. how　　　　　 B. which　　　　 C. where　　　　　　　 D. that　　

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