—The current European debt crisis is affecting many countries in the world.

—Will it be at least several years __________ everything returns to normal?

A. when        B. before          C. that              D. since

--Your mum is very kind.　

--Yeah, My mum is pretty considerate, you know what　　　 ,she always arranges　　 everything around me.

A. she means　　　 B. you mean　　 C. I mean　　　　 D. we mean

_______________made our school proud in 2011 was ____________ more than 40% of the students had been admitted to key universities.

A. What ; because B. That; what　　　 C.. What ; that　 D. That ; because

 So far this year we ______ a fall in house prices by between 5 and 10 percent.

   A. saw             B. see            C. had seen             D. have seen

 Little Tom admitted ______ in the examination, ______ that he wouldn’t do that in the future.

A. to cheat; to promise                     B. cheating; promised   

C. having cheated; promising                D. to have cheated; promised

World Wildlife Fund ______ very much the efforts that China has made to protect endangered species from being further endangered.

A. enjoys         B. appreciates    C. thanks       D. prefers

 It’s wise to forget things which aren't worth ______.

A. being remembered     B. remembering   C. to be remembered   D. to remember

 With the fast development of computer and Internet technologies, traditional printed books ______ by the growing popularity of online reading of e-books.

A. are challenged                             B. have challenged

C. are being challenged                        D. have been challenged

 In many people’s opinion, that company, though relatively small, is pleasant ______.

A. dealt with   B. dealing with   C. to be dealt with    D. to deal with

 The computer system _____suddenly while he was surfing the Internet.

   A. broke up         B. broke out       D. broke in         D. broke down