40. ----Is Mr. Smith in the office?

　 -----Yes, ____ he is in charge of the office, he must be there.

　 A. since　 B. for　　 C. whether　　 D. though　

39. ____ of the danger in the street, she had to go home, with a friend____ her.

　 A. Warning; followed　　　　　 B. Having been warned; following

　 C. Having warned; followed　　　 D. Warned; followed

38. It is said that his carelessness ___ the big fire which destroyed the house completely.

　 A. led to　 B. developed into　 C. resulted from　 D. affected

37. It's the second time that I ____ in Shanghai. It's 10 years since I ____ it last time.

　 A. have been; left　　　　　　　　 B. had been; left

　 C. have been; had left　　　　　　 D. went; had left

36. -----He failed in the driving test for the third time.

　 　----Bad luck. He ____　 a lot.

　 A. can't practice　　　　　　　 B. mustn't have practiced

　 C. need to practice　　　　　　 D. should have practiced

35. In our country, farmers ___ nearly 80% of the population, many of whom are still living a hard life.

　 A. are made up of　 B. take up　 C. make up　　 D. pick up

34.World champions owe their success to many people, ____ their coaches, who have devoted all their life to ____ them.

　 A. in particular; train　　　　　　　 B. especially; train

　 C. specially; training　　　　　　　 D. especially; training

33. I never thought of it before, ____ all that cleaners had done for us for granted. From now on, I'll _____ their hard work.

　 A. taking; respect　　　　 B. making; appreciate　 C. took; thank　　　　　　 D. took; grateful

32.----I'd like a table for four.

　 ----Sorry, sir, but we don't have any table ____ for the moment.

　 A. useful　　 B. available　 C. suitable　 D. comfortable

31.The secretary suggested ____ the plan, but the expression on the manager's face suggested he ____ accept his idea.

　 A. giving up; wouldn't　　　　 B. give up; should not

　 C. gave up; couldn't　　　　　 D. should give up; couldn't