Is this factory (the one)I visited last week .

Is this factory (the one)I visited last week . Is this factory the one you visited last week.这里只能用the one,不 Is this factory the one you visited last week.变成陈述句怎么变.是This This factory is ______ the one we visited last week.正确答案是the is this factory that we visited last week,为什么在that 前加the one Is this factory the one you visited last week.为什么THAT不可以替换 T This is the factory where we visited last week. Is this the factory _____ we visited last week? Is this factory ______you visited last week? ① Is this the factory ______ you visited last week① Is this This is the factory ——you visited last week 和 this is factor This is factory the one you visited.