I . PRESENT SIMPLE :She learns a history , doesn't she?. He doesn't sleep , does he? we go to school , don' t we ? he starts to learn English , doesn't he ? They don't read this book , do they? II . PRESENT CONTINUOUS : He is singing song , isn't he ? they are writing a test , aren't they ? you , aren't watching the TV programs , are you ? she is reading a book , aren't she ? he is making a present , isn't he?