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    -Come on.Kitty. -Oh, good heavens! Both my legs are nearly to give out. I for hours like a dog. A. have been walking B. had walked C. was walking D. walked 【查看更多】

     

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    —Come on，Kitty.

    —Oh, good heavens！ Both my legs are nearly to give out. I ____ for hours

    like a dog.

    A. have been walking　　　　　　 B. had walked

    C. was walking　　　　　　　　　 D. walked

     

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