The book isn’t mine. It belongs to ______.
—Is Mr. Smith over there?—It ________ be him. He has gone to Beijing on business.
After a long walk, the old man be tired now.
You ________ worry about him. He will get well soon. A. needn’t B. can’t C. mustn’t
---Must I return the magazine to you right now, Sandy?---No, you _____.You may keep it until next Wednesday.
---This pair of shoes ____ belong to Jack. He likes this kind very much.--- It ____ be his. It’s too large for him.