Whose ruler is it?It's -----a.Peter b.Peters c.Mary's d.Peters'
问题描述：
Whose ruler is it?It's -----a.Peter b.Peters c.Mary's d.Peters'
答
选C.解析:由Whose可知使用名词所有格形式,排除A,B.因为是人名,直接在人名后加'即可,即使用Peter's.排除D.所以选C