31. The reason _____ he failed the exam was _____ he had not worked hard.

　　A. why……if B. why……that

　　C. that……why D. why……what

　　32. When you called me this morning, I _____ the newspaper.

　　A. read B. was reading

　　C. reads D. have read

　　33. _____ to get there on time， we walked as fast as we could.

　　A. hoping B. to hope

　　C. hoped D. being hoped

　　34. Walking along the river, he heard someone _____ for help.

　　A. shouting B. shout

　　C. shouted D. having shouted

　　35. _____ into many languages, the book is well known to all.

　　A. Being translated B. Having been translated

　　C. to be translated D. Having been translated

　　36. Most of the people _____ to her party were her old friends.

　　A. Invited B. to invited

　　C. being invited D. inviting

　　37. _____ from the moon, the earth with water _____ seventy percent of its surface.

　　A. See/covered B. Seeing/covering

　　C. Seen/covering D. To see/to cover

　　38. _____ I saw was two men crossing the street.

　　A. What B. Whom

　　C. Who D. That

　　39. The time will come _____ man can fly to outer space freely.

　　A. that B. when

　　C. in that D. what40. Before her marriage, she spent a considerable time in that very part of Shanghai,_____ she belonged.

　　A. which B. to where

　　C. to which D. at which

　　41. The United States is composed of fifty states, two of _____ are separated from the others by land or water.

　　A. them B. that

　　C. which D. those

　　42. They did not discover until later _____ the car had been destroyed.

　　A. as B. than

　　C. which D. that

　　43. They overcame all the difficulties and fulfilled the plan ten days ahead of schedule, _____ was something we had not expected.

　　A. that B. this

　　C. it D. which

　　44. That’s the reason _____ Ann could not do her part of the job.

　　A. that B. of

　　C. because D. why

　　45. The company official _____ I thought would be fired received a raise.

　　A. whom B. whoever

　　C. who D. of whom