题目内容
The scientist was so tired that he had to stop___________.A. have a rest B. having a rest C. to have a rest D. had a rest
答案:C
解析:
解析:
| stop
to do sth. 表示“停下来去做某事”;而stop
doing sth. 则表“停下做某事”。根据原句意思:这个科学家太累了以至不得不停下来休息一下。故应选A。
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