問題詳情

21.()The suspension bridge is made of wood and only ten persons ________ can cross it at a time.
(A)to date
(B)for good
(C)at most
(D)in advance

參考答案

答案:C[無官方正解]
難度:適中0.5
統計:A(0),B(0),C(6),D(2),E(0)

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