Question

         —Lots of trees and flowers ______ on both sides of Huanshan Road last year.
—Oh, that’s beautiful.

A．are planted

B．were planting

C．were planted

D．have planted

Answer 1

C

本题的主语是动作的承受者，要用被动句，本题中有个去年，指的是过去的事件，要用过去时，故本题使用过去时的被动句，结构为was 或were+过去分词，plant的过去分词为planted，故本题选C。