問題詳情

31. I have to apologize for the inconvenience caused. I promise _____ itagain.
(A) doing
(B) not do
(C) not to do
(D) to do

參考答案

答案:C
難度:非常簡單1
統計:A(0),B(0),C(1),D(0),E(0)

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