用must、may、might、could或can’t完成句子。
The earrings _________ be Mary’s. She never wears them.
Tim _______ go to the movies tonight. But I’m not sure.
Miss Wang _______ be at home. Because she didn’t answer the phone.
It _______ be Jason’s book. Because his name is on it.
You’d better take a raincoat. It ________ rain this afternoon.