问题补充:
In order to reduce the increasing prices of vegetables,the toll(过路费) if a truckcarrying them passes through a toll sration.
A. cancels
B. is canceiled
C. was cancelled
D. had been cancelled
答案:
A. cancels
(答案→)B. is canceiled
C. was cancelled
D. had been cancelled
解析:考查动词时态和语态。cancel与thetoll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。