单项选择题

They ______ on the program for almost one week before I joined them.

A．had been working
B．bad worked
C．have been working
D．have worked
<上一题 目录 下一题>
热门 试题

单项选择题
His eyes were found ______ on the picture.
A．fixed
B．fixing
C．to fix
D．to be fixed
单项选择题
You should make your views ______ to everybody.
A．known
B．know
C．to know
D．knowing
相关试题