题目内容
5. Kate was very excited about her Beijing trip because she her old friend in the city.
A. ran over B. ran down
C. ran after D. ran into
5. D run over表示"跑过,辗过";run down表示"停止工作;萎缩,衰减";run after表示"追逐"; run into表示"偶然碰到,意外遇见"。

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