题目内容
【题目】I am very sleepy. I tried _______my eyes open, but I couldn't.
A. keeping
B. having kept
C. to have kept
D. to keep
【答案】D
【解析】试题分析:句意:我很困,我尽力睁开眼,但是睁不开。keeping 是动名词形式;having kept是动名词的完成式;to have kept是动词不定式的完成式;to keep 是动词不定式。这里考察的句型是try to do sth.尽力去做某事;try doing sth.是尝试去做某事,不符合句意。故选D。
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