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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 249

While income worry is _______ rather common problem of the aged, loneliness is another problem that _______ aged parents may face.

A.a; the B.the; / C.a; / D.the; the
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相关知识点

Whileincomeworryisrathercommon