At present,the most important thing is that Britain needs ________ more.

问题描述:

At present,the most important thing is that Britain needs ________ more.
At present,the most important thing is that Britain needs ________ more to improve the relationship with the USA.选择并分析下,
A.to do
B.doing
C.to be done
D.do

A
need做情态动词用没有单三形式的变化~~
因此事实意动词需要的意思
即固定搭配need to do sth需要做某事
因为表主动关系所以选A不选C