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    Some of the children under the big tree. A. are singing B. are sing C. singing D. is singing 【查看更多】

     

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    Some of the children _____ under the big tree. 
    [     ]
    A. are singing
    B. are sing
    C. singing
    D. is singing

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    Some of the children         under the big tree．

    A．are singing             B．are sing           C．singing               D．is singing

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