Question

The professor ________at 8 o’clock，but he has not shown up yet，which worries all of us.

A．was supposed to arrive                        B．must have arrived

C．might have arrived                                         D．was supposed arriving

Answer

A

【解析】

试题分析: 考查虚拟语气。A应该到达；B肯定已经到了；C可能已经到了。根据后面句子的时态判断此处是对现在情况的推测，而B、C选项均为对过去发生事情的推测，所以排除B、C选项； D选项形式错误，故A为正确选项，句意：教授本应该8点钟到，但是他现在还没露面，这让我们非常担心。

考点：考查虚拟语气。