【题目】His parents insisted that he __________English well when he was in junior school.
A.would learn
B.must learn
C.learned
D.learn

【答案】D
【解析】考查宾语从句。句意：在他上初中时，他的父母亲坚决要求他学好英语。insist表示“坚决要求”，其后的宾语从句用should + v，should可省略。故D正确。