23. _____in a science competition, the three students were awarded scholarships totaling $21,000.

A. To be judged the best　　　　 　　　　　　　　 B. Judged the best 　

C. Having judged the best　　　 　　　　　　　　 D. Judging the best

22. ---You may find the key to the maths problem on page 107.

　 ---Ah, it’s so simple . I wonder why I 　　　　　of that.

A. hadn’t thought　　　　　　 　　　　　　　　　 B. haven’t thought

C. didn’t think 　　　　　　　　　　　　　　　　　　　　　　 D. wasn’t thinking

21. ---John, how did your English exam go?

---I thought I ____, but in fact I came in the top 10% in the class.

A. should have failed 　　　　　　　　　　　　　　　　　 B. couldn’ t have failed

C. might have failed 　　　　　　　　　　　　　　　　　 D. mustn’ t have failed

20. ---Ann looks hot and dry.

　　 ---So　　　 you if you had a high fever.

A. do　　　　　　　　　　　　 B. are　　　　　　　　　　　　　 C. will　　　　　　　　　　　　 D. would

19. .---Have you been to the Great Wall?

---Perhaps not in my memory. ____, it might have been during my early childhood.

A. If any　　　　　　　　　 B. If ever　　　　　　　　　　 C.If once　　　　　 　　　　　 D. If not

18. ---Did your father come back early last night?

---Yes. It was not yet eight o’clock ______ he arrived home.

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

17.In our childhood, we ______ that wasting was shameful, which we seldom mention now.

　A. told 　　　　　　　　　　　 B. tell　　　　　　　　　　　　　 C. were told　　　　　　　　　 D. are told

16.______ at the office, Mr. Green found the papers prepared for his boss were left at home.

　A. To arrive　　　　　　　　 B. On arriving　　　　　　　 C. As arriving　　　　　　　 D. While arriving

15.The _______ house smelled as if it hadn’t been lived in for years.

　A. little white wooden　 　　　　　　　　　　　　　　　　　 B. little wooden white　　

C. white wooden little　　　　　　　　　　　　　　　　　　 D. wooden white little

14.A warm thought suddenly came to me ______ I might use the pocket money to buy some flowers for my English teacher.

　A. if　　　　　　　　　　　　　 B. when　　　　　　　　　　　 C. that　　　　　　　　　　　　　 D. which