5предложений утвердительных с глаголом to be, 5 отрицательных и 5 вопросительных.

1. We are students.
 We aren't students.
 Are we students?
2. My broher is a pilot.
 My brother isn't a pilot.
 Is my brither a pilot?
3. They are playing football now.
 They aren't playing football now.
 Are they playing football now?
4. You are watchig TV at the moment.
 You aren't watchig TV at the moment.
 Are you  watchig TV at the moment?
5. Her cat is sleeping now.
 Her cat isn't sleeping now.
 Is her cat sleeping now?