Положительные:
1) I was walking to the gym when I met John.
2)I was in the garden when my mom came.
3)She was constantly singing.
4)I was working in the garden all day.
5)The birds were singing.
Отрицательные:
1)I wasn't doing my homework when my mom came to me.
2)I wasn't tired yesterday.
3)He wasn't calling her in the morning.
4)Her baby sister wasn't cry all afternoon.
5)We were not having a dinner party yesterday.
Вопросительные:
1)What was it like?
2)Was he walking in a gym when he met Peter?
3)Was I having a dinner yesterday?
4)What were you doing in the evening yesterday?
5)Were the birds singing?