Measures have been taken to prevent the accidents, but much _____ for more impro

题型：不详难度：来源：

Measures have been taken to prevent the accidents, but much _____ for more improvement.

A．remains to be done	B．is remained to do
C．remains to do	D．is remaining to be done

答案

A

解析

试题分析：这题考察remain的用法：remain不及物动词，不用被动语态，remain to be done“仍然要被做”，句意是：防止事故已经采取了很多措施，但是还有很多事有待去做。选A。
点评：动词的用法主要考虑时态语态，还有一些固定搭配也要平时记忆。