题目内容
Many trees _______ on the streets every years. So the air is very fresh now.
A. plant B. are planted
C. planted D. were planted
【答案】B
【解析】考查被动语态的用法。根据“every years”得知用一般现在时态。主语是Many trees故用一般现在时态的被动语态,因此选B。
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