―Hello! May I speak to Jack, please?
―Yes, speaking.
―Oh, I _________ your voice at first.
A．don’t recognizeB．didn’t
C．hadn’t recognizedD．haven’t recognized
B。
說話的時候已經(jīng)聽出來是Jack的聲音，“沒聽出來”是說話前的動作，用過去時。
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