29. Andrew is busy ___ on the phone with his twin brother. (A) talking (B) to talk (C) talk (D) is t

問題詳情

29. Andrew is busy ___ on the phone with his twin brother.
(A) talking
(B) to talk
(C) talk
(D) is talking

參考答案

答案：A
難度：適中0.666667
統計：A(4),B(1),C(0),D(1),E(0)

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