题目内容
.
In order to make our city green, ____.
A. it is necessary to have planted more trees B. our city needs more trees
C. we must plant more trees D. many more trees need to plant
A
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题目内容
.
In order to make our city green, ____.
A. it is necessary to have planted more trees B. our city needs more trees
C. we must plant more trees D. many more trees need to plant
A