It is difficult for any of us to eat better, exercise more, and sleep enough, we know we should. A. because B. even if C. unless D. before 题目和参考答案——青夏教育精英家教网—

题目内容

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

A. because　　　 B. even if　　　　　 C. unless　　　　　 D. before

考查让步状语从句的连接词。句意：对于我们任何人来说，吃好点儿，多运动点儿，睡足点儿是困难的，即使我们懂得应该做怎么做。根据句意选B。

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