II. 单项选择（每小题1分，共15分）
21. ----Peter has been eating sweets all day. -----__________ he is not hungry .
A No wonder B . No doubt C . No use D. No way
22.Time, _______ correctly, is money in the bank.
A .to use B. used C. using D. use
23. Although this medicine can cure you____ your illness, it has a bad effect _____you
A. for, in B. for, on C. of, on D. of ,at
24. The newcomer went to the library the other day and searched for _he could find about Obama .
A . whenever B. wherever C. whichever D. whatever.
25. ______I met him , he was working as an engineer in a big company.
A. Since the first time B. The first time C. For the first time D. The first time which
