Question

---Your city looks beautiful.
---Yes. Lots of trees and grass ________ last year.

A．are planted	B．have planted
C．were planting	D．were planted

Answer 1

D

解析试题分析：句意：-你们的城市看起来非常的美丽。-是的，去年种植了许多的树木和草。主语是动作的承受者，所以用被动结构，be +done，因为时间是去年，所以用过去时态，故选D。
考点：考查被动语态。