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    --- Did Mary go to the exhibition yesterday? --- Yes, but she at home. A. may have stayed B. must stay C. should have stayed D. was staying 【查看更多】

     

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    — Did Mary go to the exhibition yesterday?
    — Yes, but she _____ at home.
    [     ]
    A. may have stayed
    B. must stay
    C. should have stayed
    D. was staying

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