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    happens in the world makes us happy and sad by turns. A. That B. What C. Which D. Whether 【查看更多】

     

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    ________ happens in the world makes us happy and sad by turns.

    A. That         B. What      C. Which       D. Whether

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    ________ happens in the world makes us happy and sad by turns.
    A. That            B. What
    C. Which           D. Whether

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