i'm going to the museum.bus No.256 goes there,------?

看清楚哦,i'm going to the museum.和bus No.256 goes there,______?是两个句子.反义疑问部分当然取决于第二句：第二句中bus是主语,goes是谓语,句子是肯定的,所以反义疑问句是否定的dosen't ,bus用it代表.所以写出来是 dosen't it .