Treesandflowers

问题详情：

Trees and flowers ________every year to make our country more beautiful. (陕西省)

A. is planted                        B. was planted                      C. are planted                      D. were planted

【回答】

C

解析： every year说明本句表示的是一般现在时的概念，去掉B、D项；trees and flowers表达复数意义，所以选C项。

知识点：动词时态

题型：选择题