单选题 He complied with the requirement that all graduate students in education ______ a thesis.
A. write B. writing C. to write D. be writing

【正确答案】 A
【答案解析】[解析] 与动词require的宾语从句谓语动词需用虚拟语气一样，名词requirement的同位语从句或表语从句的谓语动词也需用虚拟语气“should+动词原形”。