There's some beef in the fridge,_______?-Yes,there is

问题描述:

There's some beef in the fridge,_______?-Yes,there is
A,is there B,isn't there C,has there D,hasn't there

B练习的答案是A,,我之前选的也是B。是答案错了吗?肯定错了, 前肯后否! 地球人都知道。