50．The factory was built in a secret place, around ______ high mountains.

A. which was　　　　 B. it was　　　 C. which were　　　　 D. them were

49．---I‘ve never found a better job.　　　 　　---___________.”　　

A. I don’t think so　 　B. Too bad　　 C. Congratulations　　 D. Don’t worry

48．---Haven’t seen you for ages！ Do you still work in Guangzhou？

　　 ---_______. It’s two years since I worked there.　　

A. Yes, I have　　　　 B. Yes, I do　　 C. No, I haven’t 　　 　D. No, I don’t

47．Nobody believed his reason for being absent from the class _______ he had to meet his uncle at the airport.　

A. why　　　　 B. that　　　　　　 C. where　　　　 D. because

46．Mary,　_________　here　-　everybody　else,　stay　where　you　are.

　A.　come　　　　　 　B.　comes　　　 　　 　C.　to　come　　　　 　　　D.　coming

45．Could I speak to 　　　　　is in charge of International Sales please?

A. who　 　　　　B. what　　　　　 C. whoever　　　　　 D. whatever

44．As there is less and less coal and oil, scientists are exploring new ways of making use of ______ energy, such as sunlight, wind and water for power and fuel.

A. primary　 　　B. alternative 　　　C. instant 　　　　　D. unique

43．I can’t give you an answer right now. I’d like 　　more time to consider my decision.

　　　 A．still　　　　　　　　 B．fairly　　　　 C．quite　　　 　　　D．a lot

42．Tom, turn down the music. Why________ you make such a big noise while your baby sister is sleeping?　

A．must 　　　　 B．would　　　 C．should　　　 　　　 D．may

41．--- Could you spare me some ink?　 ---_______. Here you are.

A. With pleasure　　 B. It’s a pleasure　 C. That’s nice of you　　 D. Thanks a lot