四六级考试

【单选题】 He________ that the police would never allow this sort of thing.
A．should have known
B．would have known
C．could have known
D．might have known

网考网参考答案：A
网考网解析：
他本应知道这样的事情警察是决不允许的。should作情态动词，后接完成时，表示“本应该”。 查看试题解析出处>>