题目内容
It is required in the library regulations that any book borrowed __________ by due time, or the borrower will be fined.
A.return B.be returned
C.returns D.is returned
B
【解析】
试题分析:考查虚拟语气。it is required+ that 从句,从句中的谓语动词用“should+动词原形”, should可以省略。句意:图书馆的条例里面规定了任何被借出的书应该到期归还,否则借书者要受到罚款。故选B
考点:考查虚拟语气

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