余姚市肖东中学
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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:876

【原创】In addition to world hunger, some environmental problems human activities have contributed to ______ soon.

A.need solving B.needing solving
C.needing to be solved D.need to solve
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【原创】In addition to world hunge