问题
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 ;
B:why he stays up so late
C:why is he so busy
D:when he will stop working ;
正确答案是：
同类题型
Please turn off the light. —OK, Mom. I won’t leave the room ______ the light_____.
____is known to us is that China has won five gold medals in the 2010 Winter Olympic Games
I’m sorry for stepping on your toes.— ______.
Her son began to play __________piano when he was only three. Now he’s very good at it .