1. Is your father sleeping now? yes, he is.no, he isn't
2. Is it raining now? yes it is. no it isn't
3. Are you doing your homework? yes i am. no, i'm not
4. Are you going home? yes i am. no, i am not.
5. Is your mother having dinner? yes, she is. no, she isn't
6. Are they having an English lesson now? yes, they are. no, they aren't