题目内容
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 |
D
解析
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题目内容
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 |
D
解析