Отрицательный предложении паст континиус дайте определение

I was reading at 7 o'clock yeasterday.
We were singing a song from 6 till 7 yesterday.
He was playing tennis at 3 p.m. yesterday.
She was watching TV from 4 till 6 o'clock yesterday.
They were learing new words at 5 p.m. yesterday