21. ___________ 22.___________ 23. ___________ 24. ___________ 25. ___________

14. Everyone knows that __________Great Wall of China is very famous.

    A. a           B an            C. the           D. 不填.

13. People __________breathe when they are under water.

    A. can't         B. mustn't        C. shouldn't      D. needn't

12. Excuse me, could you tell me when __________the new Olympic Center?   

A. are we visited   B. will we visit   C. we are visited   D. we will visit

11. Jack has never been to Disneyland before, but he __________there this summer.

   A. has been     B. is going       C. went          D. goes

10. The food in that restaurant __________delicious, but it tastes bad.

   A. looks        B. feels           C. becomes       D. gets

9. The suitcase (手提箱) was__________heavy for me to carry, so I pulled it up the stairs and into my flat.

   A. quite          B. so             C. very           D. too

8. After they passed their exams, they_______by having a party.

   A. succeeded     B. celebrated      C. prepared       D. received