—Look the light in Jim’s room is still on. Do you know­­?—To study for the coming

问题补充：

—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

答案：

A. if he works hard

B. why is he so busy

(答案→)C. why he stays up so late

D. when he will stop working

解析：本题考查的是特殊疑问句作为宾语从句时，要注意要用陈述句语序，故选C