如何回答：Is this a math book ?如题

如何回答：Is this a math book ?如题 Is this Gina如何回答 Is math interesting? 怎么回答 Is this a boy?回答 Is this a clock?回答 is this your brother?如何回答? What is this place?如何回答 Is he your math teacher?(否定回答) Sorry,this math problem is a bit difficult for me.I need to c____ it again. This math problem is s_____ for you,but it’s difficult for such a young boy This is (a math) book.对括号内容提问,说理由 what is this,回答有没有a This is a dictionary (作否定回答 Is this a ruler.(做否定回答) Is this a map作肯定回答 Is this a quilt作肯定回答. Is this a bedroom?的回答急 Is this a girl?怎么回答