問題詳情

27. Night-shift workers lead a strange life, working while the rest of us are sleeping, _____ while the rest of us are working.
(A) then they sleep
(B) until they go to sleep
(C) then sleeping
(D) after which they sleep

參考答案

答案：C
難度：簡單0.710526
統計：A(12),B(4),C(54),D(2),E(0)

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