問題詳情

30.Before _______ the envelope, you must be sure that you have enclosed all of the materials listed in the instruction.
(A) was sealed
(B) seal
(C) sealing
(D) sealed

參考答案

答案:C
難度:適中0.573269
統計:A(75),B(70),C(356),D(84),E(0) #
個人:尚未作答書單:Sheltered English instruction

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