問題詳情

33. All the workers have to work ____ to make sure that the machinesgo smoothly through the night.
(A) in relays
(B) in return
(C) in advance
(D) in reality

參考答案

答案：A
難度：困難0.384615
統計：A(10),B(9),C(6),D(0),E(0)