John was so sleepy that he could hardly keep his eyes .A. openB. to be openedC. to openD.

发布时间：2020-08-15 01:02:38


John was so sleepy that he could hardly keep his eyes     .
A. open
B. to be opened
C. to open
D. opening

网友回答

(答案→)A. open
B. to be opened
C. to open
D. opening
解析：作keep的宾语补足语，表状态用形容词或过去分词；当既有过去分词，又有相应的形容词时，补语用形容词。
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