問題詳情

34. Studies have shown that people with the lowest mortality rate _______ between 6 and 7 hours a night.
(A) sleeps
(B) sleep
(C) is sleeping
(D) has slept

參考答案

答案:B
難度:適中0.515625
統計:A(8),B(33),C(16),D(7),E(0)

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