单项选择题

They were invited to an important ball ______ the first time in their life.

A．for
B．at
C．on
<上一题 目录 下一题>
热门 试题

单项选择题
What number is ______ bus
A．Jims
B．Jim
C．Jim's
单项选择题
We have no classes ______ Saturdays.
A．at
B．on
C．in
相关试题