Chengduisagreenercitynowbecausemoreandmoretrees
问题详情:
Chengdu is a greener city now because more and
more trees ________ every spring.
A.were planted B.are planted C.will be planted
【回答】
B 点拨:本题用语法判定法解题。树是被种植,因此用被动语态,每年春天是经常*的行为,用一般现在时。故选B。
知识点:动词语态
题型:选择题