The university regulations require that the students _____ at least 90% of the lectures.
A、attended
B、to attend
C、would attend
D、attend
【正确答案】：D
【题目解析】：考查require的用法。句意：大学的规定要求学生至少要参加90%的课程。require表示“要求”，后面接that从句时谓语动词要用虚拟语气，结构为“should＋动词原形”，should可以省略，故选D。
