单项选择题

It is essential that these application forms ______ back as early as possible.

A．must be sent
B．will be sent
C．are sent
D．be sent
<上一题 目录 下一题>
热门 试题

单项选择题
A．formerB．returnedC．reversedD．regular
A．former
B．returned
C．reversed
D．regular
单项选择题
It is well known that knowledge is the ______condition for expansion of mind.
A．incompatible
B．incredible
C．indefinite
D．indispensable
相关试题