In order to make our city green . A. it is necessary to have planted more treesB. many mo

问题补充：

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

答案：

A. it is necessary to have planted more trees

B. many more trees need to plant

C. our city needs more trees

(答案→)D. we must plant more trees

解析： “使城市绿化”是“我们(we)”的目的。