-------------------------------------------------- It's my sister.【根据答句写问句,要合理】

-------------------------------------------------- It's my sister.【根据答句写问句,要合理】
-------------------------------------------------- It's my sister.【根据答句写问句,要合理】

-------------------------------------------------- It's my sister.【根据答句写问句,要合理】
应该是在打电话的时候吧
Who is that?

Who is the girl over there？……………………汗，初中课本上学的

Who is that?那是谁？