11. You'd better take these documents with you __ you need them for the meeting.

A. unless B. in case

C. until D. so that

12. I haven' t been to a pop festival before and Mike hasn' t __

A. too B. as well

C. neither D. either

13.__ is known to the world, Mark Twain was a great American writer.

A. As B. Once

C. That D. It

14. John complained to the bookseller that there were several pages______ in the dictionary.

A. lacking B. losing

C. missing D. dropping

15. Not until the game had begun __ at the sports ground.

A. should he have arrived B. would he have arrived

C. did he arrive D. had he arrived

16. Moviegoers know that many special effects are created by computers, they often don' tknow is that these scenes still require a lot of work.

A. That B. Whom

C. What D. How

17. The president is to give a formal __ at the opening ceremony.

A. speech B. debate

C. discussion D. argument

18. When I am confronted with such questions, my mind goes __, and I can hardly remember myown date of birth.

A. faint B. blank

C. dark D. blind

19. If they are willing to lend us the money we need,all our problems will be__

A. solved B. caused

C. covered D. met

20. This article __ more attention to the problem of cultural conflicts.

A. cares for B. allows for

C. applies for D. calls for