题目

题型：不详难度：来源：

Many air flights _________because of the eruption of the volcano, in _______case, many passengers had no choice but to take a train.

A．had been cancelled; which	B．have been cancelled; what
C．had been canceling; that	D．have been canceling; where

答案

A

解析

考查时态及定语从句。句意：由于火山的爆发，许多航班都被取消了，在这种情况先，许多乘客只有坐火车了。根据语境可知主句描述的是过去某个时间前已经完成的动作，故用过去完成时态。在非限定性定语从句中，指代前文整句话内容时，只能用which做引导词，故选A。