把下列句子改成一般疑问句,再肯定和否定回答.I’mastudent.肯定回答:否定回答:
This is a book.肯定回答: 否定回答:Your classroomis big.肯定回答: 否定回答: There are some trees behindthe house.肯定回答:否定回答: You go to school on foot. 肯定回答:否定回答: He works at the hospital.肯定回答:否定回答: