谁能教教我如何改这一题,帮我看下哪个括号里的不对,怎么改. Buffalo,(that) once (roaming) the united states (by) the millions ,(had been) reduced to a population of only 1,500 by the late 19th century.
Buffalo,(that) once (roaming) the united states (by) the millions ,(had been) reduced to a population of only 1,500 by the late 19th century. " ,"后是定语从句,roaming-----roamed
朋友,错的地方有两处:Buffalo,(which) once (roamed) the united states (by) the millions ,(had been) reduced to a population of only 1,500 by the late 19th century.