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

. In order to reduce the increasing 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

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

 In order to reduce the increasing 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