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42 The airlines ____ to us about the long flight delay, but they just kept us waiting and did not say anything.
(A)could explain
(B)had explained
(C)should be explaining
(D)could have explained


答案:D
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最佳解!
BellaLu 大三下 (2019/12/26)
could have +Vpp用以表達你...


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42 The airlines ____to us about the long..-阿摩線上測驗