is this Peter 进行肯定回答

is this Peter 进行肯定回答 this is a ruler.(对A RULER进行提问,并做肯定回答） Is this her dictionary?(作肯定回答) is this Jim 做肯定回答 -Is this your grandmother?做肯定回答 Is this your ruler?作肯定回答 Is this his backpack?肯定回答 Is this your umbrella?肯定回答是什么 Is this a map作肯定回答 Is this your book?的肯定回答 Is this your dictionary肯定回答 Is this your father?肯定回答是什么