mary is playing with the dog改为一般疑问句并作否定回答

mary is playing with the dog改为一般疑问句并作否定回答 Nancy is playing with the dog.(改为一般疑问句并作否定回答) She is Mary.(改为一般疑问句并作否定回答) Mary?,she Mary likes playing the piano.改为一般疑问句,并回答 volleyball is difficult?改为一般疑问句并作否定回答 He is short.改为一般疑问句,并作否定回答. The notebook is the bed改为一般疑问句并作否定回答 There is some meat in the fridge 改为一般疑问句,并作肯定和否定回答 A boy is riding his bicycle in the park 改为一般疑问句,并作否定回答 Mike's baseball is under the bed.（改为一般疑问句,并作否定回答） The fish is fresh改为一般疑问句,并作否定回答 there is a library in front of the classroom .（改为一般疑问句并作否定回答