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    ( )I met my teacher I was walking in the street, but I didn’t say hello to him. A.before B.after C.until D.while 【查看更多】

     

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    I met my teacher 　 I was walking in the street, but I didn’t say hello to him.

    A. before　　　　　 B. after　　　　　　　　 C. until　　　　 D. while

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