题目内容
— The light is still on in his room. Do you know ?
— Maybe he has to study for a test.
A. if he works hard B. who he is studying with
C. what he is busy with D. when he will stop working
C
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题目内容
— The light is still on in his room. Do you know ?
— Maybe he has to study for a test.
A. if he works hard B. who he is studying with
C. what he is busy with D. when he will stop working
C