标题: prep 2008语法,193 HELP~!!!! A & D [打印本页] 作者: bob9603 时间: 2011-11-27 11:03 标题: prep 2008语法,193 HELP~!!!! A & D New equipment and other improvements reduced the amount of time-from eleven hours in 1982 to six in 1988-needed by workers so that they could produce a ton of steel.
A, by workers so that they could produce a ton of steel.