问题 选择题

In order to reduce the increasing prices of vegetables, the toll____ if a truck carrying them passes through a toll station.

A.has cancelled

B.is cancelled

C.was cancelled

D.had been cancelled

答案

答案:B

考察时态,句意:为了降低蔬菜价格,如果一辆装有蔬菜的卡车经过收费站,收费被取消了。可知该句叙述的是一个客观存在的事实,过去产生,今后还将进行下去的一个客观事实,故用一般现在时态。选B。

计算题
填空题