I had just taken a bite of my hot dog ________ I heard a familiar voice yelling

题干

I had just taken a bite of my hot dog ________ I heard a familiar voice yelling at me from across the crowded school yard.

A．before

B．while

C．since

D．when

上一题下一题 0.4难度单项选择更新时间:2012-07-06 05:57:15

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