问题
选择题
—There is a lot of wind in North China.
—Well, more trees ______ every year to stop the wind. [ ]
A. must be planted
B. can planted
C. should planted
答案
答案：A
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—There is a lot of wind in North China.
—Well, more trees ______ every year to stop the wind. [ ]
A. must be planted
B. can planted
C. should planted
答案：A