why pay more at other shops?we have the lowest prices in town.why _____at other shops?we have the lowest prices in town.a to pay much b having paid much c pay more d for paying more为什么选c
问题描述：
why pay more at other shops?we have the lowest prices in town.
why _____at other shops?we have the lowest prices in town.
a to pay much b having paid much
c pay more d for paying more
为什么选c
答
why do......为什么要.....?
why not do.....为什么不.....?
固定用法
答
WHY后面加原型