He pretended
to be studying
to be studying
（study） when his mother stepped into his room．

【答案】to be studying

【解答】

【點評】

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發(fā)布：2024/6/27 10:35:59組卷：31引用：3難度：0.7

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解析

相關試卷

A． being wondering	B． to have wondered
C． to be wondering	D． having wondered

A．to work	B．to be working
C．to have worked	D．working

He pretendedto be studyingto be studying（study） when his mother stepped into his room．