单项选择题

By the time he arrives in Beijing,we ______ here for two days.

A．will have stayed
B．have been staying
C．shall stay
D．have stayed
<上一题 目录 下一题>
热门 试题

单项选择题
I was just to get up ______ a knock was heard on my door.
A．as
B．while
C．when
D．since
相关试题