问题描述：
Betty's family（ ）big.The family（）allat home.Ais is B is are C are is D are are
Betty 's family（ ）big.The family（）allat home.A.is is B.is are C.are is D.are are
Betty 's family（ ）big.The family（）allat home.A.is is B.is are C.are is D.are are
问题解答：
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