the old man in brown coat over there is mr

答案：C
The old man in a brown coat over there is Mr. Jackson.
那边穿一件棕色上衣的老人是杰克逊先生.
介词短语in a brown coat 修饰man, 表特指,故要用the来修饰,coat为第一次出现,为单数,故用a 来修饰

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