Question

The teacher demanded that the exam _____ before eleven.

A．must finish

B．would be finished

C．be finished

D．must be finished

Answer 1

C

解析试题分析：demand要求，后接宾语从句，从句要用should + do,should可省略。故选C
考点：虚拟语气
点评：demand, insist, suggest, command, order, require, request, desire等一类动词后的宾语从句（suggest表“暗示、隐含等”insist表“强调，力言等”不用虚拟语气。） 从句谓语用“should+动词原形”，should可省。