He pretended _______ when his mother stepped into his room.A．to studyB．studyingC_刷题宝

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He pretended _______ when his mother stepped into his room.

A．to study	B．studying
C．to have studied	D．to be studying

上一题下一题 0.85难度单项选择更新时间:2015-06-23 09:22:34

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