题干
——Be quiet! Mr Smith is coming.
——Don't worry. It__________be him. Mr Smith is much taller.
A：mustn't
B：must
C：can't
D：needn't
答案(点此获取答案解析）
C
——Be quiet! Mr Smith is coming.
——Don't worry. It__________be him. Mr Smith is much taller.
A：mustn't
B：must
C：can't
D：needn't
