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    There a tree in front of the classroom last year, but there now. A. is , isn’t B. isn’t , is C. was , wasn’t D. was , isn’t 【查看更多】

     

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     单项选择。
    There ______ a tree in front of the classroom last year, but there ______ now.
    [     ]
    A. is, isn't
    B. isn't, is
    C. was, wasn't
    D. was, isn't

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