問題詳情

22. The little boy jumped up and down happily when he saw some butterflies ______ over the flowers.
(A) flown
(B) to fly
(C) flying
(D) has flown

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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