1. The village's drinking water .......... with poisonous chemicals since the factory came in to operation.
A, contaminates B, is contanminates C, has contanminated D, has been contanmiated
2. WHen the policeman came to the scence, the driver of the car ...........
A, have left B, had left C, leaves D, was left
góp ít công sức :> 1 bên tóc hơi dị =)