32. It was not until he went to the office ______ he remembered ______ the key at home.

　　 A. when; to leave　　　　　　　　 B. that; to leave

　　 C. when; leaving　　　 　　　　　　D. that; leaving

31. John may phone tonight. I don’t want to go out ______ he phones.

　　 A. as long as　　 B. so that　　　 C. in case　　　　 D. in order that

30. John, look at the time. ______ you play the piano at such a late hour?

　　 A. Must　　　　　 B. Can　　　　　 C. May　　　　　　 D. Need

29. The matter ______ your fate can not be taken for granted.

　　 A. relating to　 B. related to　　 C. relate to　　　 D. to relate to

28. Scientists think that the continents ______ always where they ______ today.

　　 A. aren’t; are　　 B. aren’t; were　　 C. weren’t; are　　 D. weren’t; were

27. Large amounts of water ______ needed to plant the trees in this area.

　　 A. is　　　　　　 B. has　　　　　 C. are　　　　　　 D. have

26. It’s such a difficult problem ______ only a few students in the class can work out.

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

25. Mr. Brown has three children. One of ______ is a boy of six and ______ twins of twelve.

　　 A. whom; others　　　　　　　　　 B. them; the others

　　 C. whom; the others　　　　　　　 D. them; others

24. ______ as it was at such a time, his work attracted much attention.

　　 A. Being published　　　　　　　　 B. Published

　　 C. Publishing　　　　　　　　　　 D. To be published

23. The chief manager has decided to put ______ he thinks is energetic, clever and has good qualities in the position of the leadership.

　　 A. those who　　 B. anyone　　　　 C. whomever　　　　 D. whoever