Nearlyallthestreetsareinstraightlines,

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Nearly all the streets are in straight lines, ________ from east to west. Those ________ run from north to south are called avenues.

A. running; that B. run; who 　　C. running; who D. run; that

A. 主语与run(延伸)是主动关系，所以用现在分词。Those指街道，所以不用who而用that来引导定语从句。