.It is difficult for any of us to eat better, exercise more, and sleep enough,________ we know we sh

题目简介

.It is difficult for any of us to eat better, exercise more, and sleep enough,________ we know we sh

题目详情

.
It is difficult for any of us to eat better, exercise more, and sleep enough,________ we know we should.
A.becauseB.even ifC.unlessD.before
题型:单选题难度:偏易来源:不详

答案

B

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