26. Sorry, 1 took your book _________ mistake.

A. at　　　 B. on　　　 C.　 for　　 D. by

答：D。 by mistake 干错了……事

25. -You’re lucky.

　 -What do you mean _______ that?

A. for　　　 B. in　　　 C. of 　　　D. by

答：D。 by 表示“方法，手段”。What do you mean by that? 你这样讲(或做)是什么意思？

24. -What time is it, please?

　 -It is seven _______ my watch.

A. in　　 B.　 by　　 C. for　　　 D. at

答：B。by根据，按照

23. If you study hard, you’ll succeed ________.

A. in time　　　　 　　B. at one time

C. on the same time　　　 D. on time

答：A。 in time 此处相当于sooner or later 迟早，总有一天； at one time在过去一段时间里；on time按时，准时。

22. -How long have you lived in Shanghai’?

　 -________1949.

A.　 After　 　B. In　　 C.　 From　　 D. Since

21. The building is a memorial _________ those who were killed in the war.

A. at　　 B.　 to　　 C. towards　 D.　 with

答：B。表示“……的纪念碑”，用to代替of。类似的用法还有 key to the door, entrance to the cinema, answer to a question, solution to a problem, notes to the text ...。

20. Your bike is excellent __________ the colour.

A. except　　　　 B. except for　

C. besides　　　 D.　 beside

答：B。except for 除了(常表示整体好，局部不好)

19. Please write ______ ink. Don’t write_______ a pencil.

A. in, in　　　　 B. with, with　

C. with, in　　　 D. in, with

答：D。习惯上说inpen／Pencil／ink用钢笔(铅笔、墨水)，在pen／Pencil／ink／前不用冠词，为惯用法。若pen(pencil)前有冠词，表示具体的东西，应用with。如：with a pen／the pen／pens。

18. Sports and games can be_________ great help to us.

A. of　 　B. having　 　C. done　　 D. in

答：A。be of+名同=be+形容词。如 The book is of great value / use / importance.= The hook is very valuable / useful / important.

17. The mother felt very happy ________ her son’s success.

A. with　　　 B.　 in　　　 C. at　　 D. on

答：C。at表示“听到……，看到……时”。如 He was very happy at these re-marks. 听到这席话他十分高兴。