单项选择题

You may not go out to play games () you have finished your work.

A．as
B．while
C．until
D．when

<上一题 目录 下一题>
热门 试题

单项选择题
The heavy rain()for several days and all the roads were flooded.

A．went up
B．kept on
C．fell down
D．broke down
单项选择题
As () known to all, language has been developed through social contacts.

A．is
B．are
C．though
D．if
相关试题