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------superstitious beliesfs about mandrake plant.A people h

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------superstitious beliesfs about mandrake plant.A people have had long B have people long had
C people have long had D long have had people
C people have long had
再问: 为什么是这个
再答: long 是副词, 常用于否定句, 一般不用于肯定句。偶尔用于肯定句, 得放在行为动词前, 助动词后。 再如: He has been ill long (此为错句) He has long been ill (正确)