This is the best factory ___I have worked all my life的答案和讲解A that B when C where D which

This is the best factory ___I have worked all my life的答案和讲解A that B when C where D which
This is the best factory ___I have worked all my life的答案和讲解
A that B when C where D which

This is the best factory ___I have worked all my life的答案和讲解A that B when C where D which
A
因为有 the best,是最高级,所以不可以用which,又是指物的,所以用who

that

that