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

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統計： A(4), B(18), C(76), D(7), E(0) #1784658

詳解 (共 1 筆)

#2857442
promise +to +原V
(共 17 字，隱藏中）
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