问题
选择题
They urged that the library ______ open during the vacation.
A.must be kept
B.is kept
C.would be kept
D.be kept
答案
答案:D
题目分析:考查虚拟语气。根据动词用法可知urge后面的宾语从句用should +动词原形,should可以省略,所以D选项正确。句意:他们强烈要求图书馆在假期开放。