—Listen! Someone is knocking at the door. Who _____it be?—It_____ be Tom. He phoned to visit me this evening.
The color of your trousers doesn’t ____ your jacket.
The question is __________ easy; all the students can answer it.
Xi Juan is her _______ writer.
The classroom is very _______ because some students are making some _______.
-Do the interesting books belong to________? - No, they are the __________ .