Is this the factory ______ you visited last month?

Is this the factory ______ you visited last month? ① Is this the factory ______ you visited last week① Is this Is this factory( )you visited last Sunday This is factory the one you visited. This is the factory ——you visited last week 和 this is factor This factory is ______ the one we visited last week.正确答案是the Is this factory the one you visited last week.变成陈述句怎么变.是This Is this museum ______ they visited last month? 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 Sunday,为什么要用the one is this factory ____ you visited last Friday? Is this factory the one you visited last week.为什么THAT不可以替换 T