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    Mr. Wu this math problem him many times, but he still doesn’t understand it. A. explains ; to B. have explained ; for C. explained ; with D. has explained ; to 【查看更多】

     

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    Mr. Wu___this math problem____him many times, but he still doesn’t understand it.

    A. explains ; to   B. has explained ; for  C. has explained ; to  D. explained ; with

     

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    Mr. Wu___this math problem____him many times, but he still doesn’t understand it.

    A．explains ; toB．has explained ; forC．has explained ; toD．explained ; with

    查看答案和解析>>

    Mr. Wu___this math problem____him many times, but he still doesn’t understand it.
    A．explains ; toB．has explained ; forC．has explained ; toD．explained ; with

    查看答案和解析>>


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