题目内容
21.[2001全国] ________ such heavy pollution already, it may now be too late to clean up the river.A. Having suffered B. Suffering
C. To suffer D. Suffered
答案：A
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25.[2001全国]—Good morning,
Grand Hotel.
—Hello, I'd like to book a room for the nights of the 18th and 19th.
—________ .
|
A. What can I do for you? |
B. Just a minute, please. |
|
C. What's the matter? |
D. At your service. |