In order to reduce the increasing prices of vegetables，the toll(過路費) if a truck  carrying them passes through a toll sration.
A．cancelsB．is canceiledC．was cancelledD．had been cancelled
B
考查動詞時態(tài)和語態(tài)。cancel與thetoll之間是被動關系，而且是目前狀況，所以用一般現(xiàn)在時的被動語態(tài)。
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