Question

— Hi, Mary. Any idea where Bill is?— He ______ in the library. I saw him reading books there ju.

— Hi, Mary. Any idea where Bill is?— He ______ in the library. I saw him reading books there just now. A．shall be B．should have been C．must be D．might have been

Answer 1

C

虚拟语气辨析。句意：嗨，玛丽，知道比尔在哪儿吗？——他一定在图书馆。我刚才看到她在那儿读书了。可知下文是对事实的肯定判断，不用虚拟语气，故选C。