Is it your ruler Yes,it's.错在了哪里
问题描述：
Is it your ruler Yes,it's.错在了哪里
答
it's -> it is .
简单回答不能用省略形式
答
it's 改为it is
一般疑问句肯定答语的末尾不缩写
答
不能缩写,要写it is