问题
选择题
John was so sleepy that he could hardly keep his eyes ______.
A．open
B．to be opened
C．to open
D．opening
答案
答案：A
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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John was so sleepy that he could hardly keep his eyes ______.
A．open
B．to be opened
C．to open
D．opening
答案：A
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。