题目类型：
填空题
题目内容
根据题干要求填空
With a question tag:
There have been a lot of changes in the small town since I left, ______?
With a question tag:
There have been a lot of changes in the small town since I left, ______?
正确答案
haven’t they考查现在完成时的反义疑问句。前肯，后否。