—Miss Li, must we hand in our homework right now?—No, you ____.You can hand it in tomorrow.
He needs our help because he is a ________ man now.
________ the traffic jam, he wasn’t late for class.
The famous doctor is going to operate ________ this injured boy.
________ class went to the Great Wall during the holiday.
Anny wants a room ________ his own. A.of C.on C.for D.to