—Look，the light in Jim’s room is still on. Do you know ?
—To study for the ing 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
网友回答
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