問題詳情

33.1 had been working on math for the whole aftensoon and the numbers before myeyes.
(A). swim
(B). swum
(C). swam
(D). had swum

參考答案

答案:C
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)

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