单项选择题

Jerry seldom came to the laboratory, ______ he

A．did
B．didn't
C．does
D．doesn't
<上一题 目录 下一题>
热门 试题

单项选择题
I'll lend you my computer ______ you promise to take care of it.
A．unless
B．while
C．as
D．if
单项选择题
Never ______ Josh met such a complicated situation.
A．did
B．could
C．will
D．had
相关试题