Переделать предложения в отрицательную форму b1. we watched tv on sundays. b2. we were watching tv on sundays at 16: 30. b3. we had watched tv on sundays till 2003. b4. we had been watching tv for two hours when she came.

Did we watch TV on Sunday?
were we watching TV on Sunday at 16.30?
had we watched TV on Sunday till 2003?
had we been watching TV for two hours when she came?