Question

-Our city looks more beautiful!
-Yes. Lots of trees and grass ______ since last year.

A．have been planted

B．are planted

C．will be planted

D．were planted

Answer 1

A

在英文中，有since引导的时间状语，句子的主要成分用完成时态，表示自从某个时候一直做某事，完成时的结构为have+动词的过去分词，故本题选A。