单项选择题

— ______ do you write to your parents— Twice a month.

A． How long
B． How soon
C． How often
<上一题 目录 下一题>
热门 试题

单项选择题
Tom hasn't been at work ______ nearly a month.
A． since
B． in
C． for
单项选择题
The child is too small to dress ______.
A． him
B． his
C． himself
相关试题