Question

一I still cannot figure out why he missed his flight．
一He       an accident on the way to the airport．

A．could have had	B．should have had
C．would haye had	D．must have had

Answer 1

A

考查情態(tài)動(dòng)詞和虛擬語(yǔ)氣�！拔胰匀徊焕斫馑�是怎么錯(cuò)過(guò)航班的�！薄八�可能在去機(jī)場(chǎng)的路上遇到事故了�！眂ould have done表示不太肯定的推測(cè)，“可能已經(jīng)做了某事”；should have done“本應(yīng)該做某事”；D“一定已經(jīng)做了某事”。根據(jù)答語(yǔ)可知，表示的是不太肯定的推測(cè)。故選A。