—The light in his room is still on. Do you know _______?

—In order to get ready for the coming exam.

A. why he stays up so late           B. if he works hard

C. what he is doing             D. when he will stop working

The light in Mr. Zhang’s office is still on. I am afraid he ________ his work yet.

A. doesn’t finish?????? ????????????? B. didn’t finish??????? ????????????? C. hasn’t finished

The light in the room wasn't ________ for me to read．

1. A.
   enough bright
2. B.
   brightly enough
3. C.
   enough brightly
4. D.
   bright enough

He must be in the room, because the light in the room is__________.

Look! The light in the room is still on. Mr. Liu          at work.