Ex. 57. open the brackets and put the sentences into positive, negative and interrogative forms in past continuous/progressive. 1. вчера в 6 часов вечера мы с играли в футбол. 2. вчера утром они рисовали картину. 3. я сажала розы вчера в 2 часа. 4. мы играли в компьютерные игры вчера долго. 5. я шёл в магазин когда увидел странного человека. 6. петя играл на скрипке вчера 2 часа. 7. она читала книгу вечером. 8. мы пели песни и танцевали когда вы пришли. 9. я плакала, когда вы мне позвонили. 10. когда мама пришла домой, мы убирали в квартире.

Как я понял, Вам надо каждое из предложений поставить в положительной, отрицательной и вопросительной формах? Если это так, то вот вам ответ: (+-будут положительные предложения, - отрицательные, ? - вопросительные)
1) + Yesterday, we with guys were playing football at 6 pm;
- Yesterday, we with guys weren't playing football at 6 pm;
? Were we with guys playing football yesterday at 6 pm;
2) + Yesterday morning they were painting picture;
- Yesterday morning they weren't painting picture;
? Were they painting picture yesterday morning;
3) + Yesterday I was planting roses at 2 pm;
- Yesterday I wasn't planting roses at 2 pm;
? Was I planting roses at 2 pm yesterday?;
4) + We were playing computer games very long time yesterday
- We weren't playing computer games very long time yesterday;
? Were we playing computer games very long time yesterday?;
5)+ I was walking into the store, when I saw very strange man;
- I wasn't walking into the store, when I saw very strange man;
? Was I walking into the store, when I saw very strange man?;
6)+ Peter was playing on violin 2 hours yesterday;
- Peter wasn't playng on violin 2 hours yesterday;
? Was Peter playing on violin 2 hours yesterday?;
7)+ She was reading book in the evening;
- She wasn't reading book in the evening;
? Was she reading book in the evening?;
8) + We were singing and dancing, when you came;
- We weren't singing and dancing, when you came;
? Were we singing and dancing, when you came;
9) + I was crying, when you called me;
-  I wasn't crying, when you called me;
? Was I crying, when you called me?;
10) + When mum came home, we were cleaning flat;
- When mum came home, we weren't cleaning flat;
? Were we cleaning flat, when mum came home?