Where do you write on a postcard?On the letf.请看补充说明!Where do you write on a postcard?《On 》the letf.Where do you put the stamp?《In 》the top ,right corner of the postcard.这两句话中,一个用on 一个却用in ,这是为什么?
问题描述：
Where do you write on a postcard?On the letf.请看补充说明!
Where do you write on a postcard?《On 》the letf.
Where do you put the stamp?《In 》the top ,right corner of the postcard.这两句话中,一个用on 一个却用in ,这是为什么?
答