how much_______they cost?A.doB.does写出答案说明理由
问题描述:
how much_______they cost?
A.do
B.does
写出答案说明理由
答
A they是复数
答
How much do they cost?
他们要多少钱?
答
选A.因为they是复数概念,所以选do
答
选择A,因为有they