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45 percent of the house ____(burn) doen by the fire made by the little boy.是一道填空,请问填什么?

题目详情
45 percent of the house ____(burn) doen by the fire made by the little boy.
是一道填空,请问填什么?
▼优质解答
答案和解析
had been burned 因为房子被烧已经成为一种状态,且发生在过去,用过去完成时