问题

Who’s singing in the garden—It ________ be Tom. He always practices singing at this time.

A:can’t
B:need
C:must
D:mustn’t;

正确答案是：

同类题型

How tall the boy is! —Yes, he is taller than __________ in his class .

You should really smoking. It’s a terrible habit.

People are concerned about the quality of the air they ______.

I ________ ＄300 for the bike.

Mr. Smith always ________ short stories，buthe ________ a TV play these days.