is that your friend的肯定回答是什么

is that your friend?肯定回答是什么 is that your friend的肯定回答是什么 Is that your sister?的肯定回答是什么 Is this your friend 肯定回答是什么?Is he your friend?还有 Is David yo is anna your friend?肯定回答 Is that your mother 肯定回答 is that your ruler 做肯定回答 IS THAT YOUR SKIRT?肯定回答? Is he your friend?（作肯定回答） Is That girl her friend?作肯定或否定回答 Is that his good friend,Tom?作出肯定回答? Is this your mother的肯定回答是什么