In order to make our city green ____ A it is necessary to have planted more trees B many more

问题描述:

In order to make our city green ____ A it is necessary to have planted more trees B many more
trees need to plant
C our city needs more trees
D We must plant more trees

D 前后主语要一致 前面的主语应该是“我们为了使城市更绿化” 所以后面主语也是人