8. By the time we arrived, the concert _____ already begun.
(A) has
(B) had
(C) was
(D) is

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統計： A(0), B(4), C(0), D(1), E(0) #4010828

詳解 (共 1 筆)

#7540708
考試重點觀念 過去完成式（Past P...
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