— This is Tom speaking.
— Oh, it’s great. But I your voice just now.
A. didn’t know
B. didn’t recognize
C. didn’t hear
D. don’t know
网友回答
A. didn’t know
(答案→)B. didn’t recognize
C. didn’t hear
D. don’t know
解析：考查时态，由后面的时间状语just now，可以知道时态是一般过去式，recognize表示识别，know表示了解，句子意思“但是刚才我没有识别出他的嗓音”