It is required in our school that lights in students’ rooms off by 11o’clock.A. be switc

问题补充：

It is required in our school that lights in students’ rooms off by 11o’clock.

A. be switched

B. would switch

C. should switch

D. must be switched

答案：

(答案→)A. be switched

B. would switch

C. should switch

D. must be switched

解析：考查虚拟语气。固定结构：It is required that从句使用虚拟语气should+动词原形。Should可以省略。本题在be前面省略了should.句意：人们要求在我们学校里，教室里的等在11点要被关闭。根据句意说明使用被动语态。故A正确。