A great deal has been done to remedy_

问题：

[单选] A great deal has been done to remedy_ the situation.

A . maintain
B . improve
C . assess
D . protect

参考答案：B

参考解析：

【题干】做了很多处理来补救这种情况。
【解析】考查动词。题干划线词remedy意为“补救”，所以正确答案为B。