◎ 题干
— 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
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— 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 p…”主要考查了你对  【被动语态】【现在完成时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。