---“Why do you have to be there at six?”
---“The teacher demands that everyone in his seat at six.”
A. would be
B. can be
C. be
D. will be
网友回答
A. would be
B. can be
(答案→)C. be
D. will be
解析：考查虚拟语气：句意：--6点钟你怎么在这儿？--老师要求每个人6点到位。主句的动词是demand的时候，宾语从句的谓语用虚拟语气：Sb （should） do，这里填be原形，省略should。选C。