单项选择题

A great deal has been done to remedy the situation.

A．maintain
B．improve
C．assess
D．protect
<上一题 目录 下一题>
热门 试题

单项选择题
It is laid down in the regulations that all members must carry their membership cards at all times.
A．suggested
B．warned
C．stated
D．confirmed
单项选择题
If wool is put into hot water, it tends to shrink.
A．disappear
B．expand
C．break
D．contract
相关试题