--How far apart do they live? -- I know, they live in the same neighborhood. A.
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——How far apart do they live?
——_____I know, they live in the same neighborhood.
A. So far B. As far as C. As well as D. By far
试题答案
【解析】B. so far 迄今为止；as well as 表示“也，而且”；by far表示“最---”，用作比较级里边，加重语气； as far as 表示“就-----所能、所知”。句意为据我所知，他们住在同一个街区。所以答案为B.