单项选择题

Hurry up. My mother ______ for us in the zoo.

A． must wait
B． should be waiting
C． must be waiting
<上一题 目录 下一题>
热门 试题

单项选择题
There is ______ O and ______ U in the word hour .
A． a, a
B． a, an
C． an, a
单项选择题
It's quite early. We ______ worry about the time.
A． mustn't
B． may not
C． needn't
相关试题