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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 688

We all know how difficult it is for all of us to eat better, exercise more, and sleep enough________we know we should.

A.because
B.even though
C.as if
D.when
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Weallknowhowdifficultitisforal