The teacher required that no one___late for class.
问题描述：
The teacher required that no one___late for class.
A.be B.is C.should have been D.was
答
个人认为这个应该选A,主要考查的是require这个词,这个词是引导宾语从句、虚拟语气的动词.这类动词如order,demend,suggest,insist,advise,decide,propose等在引导宾语从句时为should+动词原形,should可以省略.