24.
(A) was being
(B) would be
(C) was to be
(D) would have been

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統計： A(26), B(40), C(13), D(11), E(0) #1593094

詳解 (共 1 筆)

#2938103
題目說的是實驗後的確實性，所以動詞用過去...
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