—Look，thelightinJim’sroomisstillon.Doyouknow­­

問題詳情：

 —Look，the light in Jim’s room is still on. Do you know­­______?  

—To study for the coming exam, maybe.

A. if he works hard                                     B. why is he so busy        

C. why he stays up so late                           D. when he will stop working

【回答】

C

知識點：賓語從句

題型：選擇題