问题
The girl in the classroom ______ be Sarah. She has gone to the library.
A:may
B:must
C:can’t
D:needn’t;
B:must
C:can’t
D:needn’t;
正确答案是：
同类题型
How many ________ were on the bus when the accident happened– About forty. Seven of them were kids.
Listen! Is that Linda singing in the nextroom— No, it ________ be her. She is still in Shanghai.
The two words have something ______ with each other.