is this factory that we visited last week,为什么在that 前加the one ,答案上说少先行词,factory不是先行词吗

.This is the factory that ________ built last year. 1.Is this the factory----you visited last year?则用which/that 2.Is this the factory----you worked l为什么这么填呢?有什么区别? Is this factory (the one)I visited last week .为什么括号里不用which hat Is this factory( )you visited last SundayA.the one B.which C.that D.where is this factory you work at 填空 a the one b which c that d where Is this the first factory ***some foreigners visited yesterday?***中填that,为何which不行 Is this factory ______you visited last week?为什么选CIs this factory ______you visited last week?A.that B.where C.the one D.in which is this factory that we visited last week,为什么在that 前加the one ,答案上说少先行词,factory不是先行词吗 帮忙分析下This is the factory ________ I visited yesterdayThis is the factory ________ I visited yesterday.A.that B.which C./ D.where选什么,为什么 Is this factory you want to visit tommorrow.填什么?which that where the one.如果改成the factory答案又是其他的什么?Is this factory ( ) you want to visit tommorrow This is the factory that I visit and the one ___my father worked 空格用where还是that? This is the factory that I visit and the one_____my father worked 空格处用where还是that? is this in that factory （）Red flag cars are produced.a .in whichb.wherec.whichd.that This is big factory.(改为复数) This is the factory ______ he works paper produced in the factory this year is three times the weight of that of the last two years,so the factory can't have made better progress Is this factory( )we visited yesterday?Is this factory( )we visited yesterday?Is this( )we visited yesterday?A、that B、which C、where D 、in which E、the one Is this the factory __________ he worked ten years ago?i s this the factory __________ he worked ten years ago?A.that B.where C.which D.the one 问that等于the 为什么不选择that?