单项选择题

—Do you smoke
—I______, but I quit.

A．used to do
B．used to
C．used to doing
D．used
<上一题 目录 下一题>
热门 试题

单项选择题
______the Queen's arrival, the crowd rose to its feet.
A．On
B．At
C．In
D．For
相关试题