单项选择题

So far every means（）tried, but we have not come up with a solution to the problem.

A．is
B．has been
C．are
D．have been

<上一题目录下一题>

热门试题

单项选择题

（）would like to attend the contest must apply in advance.

A．Those
B．Whoever
C．Who
D．Anyone

相关试题