题目内容
Suzhou is a greener city now because more and more trees ________ every spring.
A. were planted B. are planted C. will be planted D. plant
B 【解析】句意:苏州现在是一座更绿的城市,因为每年越来越多的树木被种植。根据every spring可知此处用一般现在时,主语trees与谓语plant之间是被动关系,故用被动语态,故选B。
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