题目内容
— The light in his room is still on. Do you know _________?
— To prepare for the coming exam, I think.
A. if he works hard B. why he stays up so late
C. why is he so busy D. when he will stop working
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题目内容
— The light in his room is still on. Do you know _________?
— To prepare for the coming exam, I think.
A. if he works hard B. why he stays up so late
C. why is he so busy D. when he will stop working