问题
选择题
In order to beautify our city, ______. [ ]
A. it is necessary to plant more trees
B. more trees need planting
C. our city needs more trees
D. we must plant more trees
答案
答案：D
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In order to beautify our city, ______. [ ]
A. it is necessary to plant more trees
B. more trees need planting
C. our city needs more trees
D. we must plant more trees
答案：D