how much do the glasses cost?回答“it cost”还是“they cost”
问题描述：
how much do the glasses cost?回答“it cost”还是“they cost”
答
当然是THEY COST
因为在问句中,用的是DO ,若用IT 回答,则与文中不符.
还有,THE GLASSES 用的是复数的形式,所以用THEY答
以上两点说明是用THEY COST