1．This is the best factory ____we visited last year .A.where B.which C.in which D.that为啥是that 而不是which,

1．This is the best factory ____we visited last year .A.where B.which C.in which D.that为啥是that 而不是which,
1．This is the best factory ____we visited last year .A.where B.which C.in which D.that
为啥是that 而不是which,

1．This is the best factory ____we visited last year .A.where B.which C.in which D.that为啥是that 而不是which,
选D
因为句子是最高级,必须用that