问题
Listen! Someone is singing in the next room. Who ____ it be Is it Li Wei—No, it ______ be her. She is at school now.
A:will; may not.
B:must; mustn’t
C:may; can’t
D:may; won’t;
B:must; mustn’t
C:may; can’t
D:may; won’t;
正确答案是：
