【单选题】
Only recently ______ to deal with the environmental problems.
A.something has done
B.has something done
C.has something been done
D.something has been done
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根据网考网移动考试中心的统计,该试题:
3%的考友选择了A选项
21%的考友选择了B选项
65%的考友选择了C选项
11%的考友选择了D选项