In order to reduce the increasing prices of vegetables , the toll if a truck car

 In order to reduce theincreasing prices of vegetables , the toll（过路费）            if a truck carrying them passes through a toll station ．

       A．cancels                                              B．is cancelled        

       C．was cancelled                                     D．had been cancelled

试题答案

【答案】

 B．考查动词时态和语态。cancel 与the toll 之间是被动关系，而且是目前状况，所以用一般现在时的被动语态。