используйте данные предложения в отрицательной и
вопросительной формах.
1.They are talking to my friend.
2.Mary is sleeping.
3.You are listening to the radio.
4.He is having dreakfast at the moment.
5.They are working now.
6.I am studying.Всем спасибо за помощь.

А что с первым предложением ?

2)Mary isn't sleepingIs Mary sleeping?3)You aren't listening to the radioAre you listening to the radio?4)We aren't drinking coffee at the momentAre we drinking coffee at the moment?5)Are not studying? Are they eating now?6)I am not studyingAm I not studying?1)-