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    He promised to contact me as soon as he got to America, but he let me . I didn.t hear from him from then on. A. out B. upon C. down D. alone 【查看更多】

     

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     He promised to contact me as soon as he got to America, but he let me ________ . I didn’t hear from him from then on.

    A. out　　　B. upon　　　C. down　　　D. alone

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