Поставить предложения в отрицательную форму ( past simple) 1 i worked at a factory three years ago . 2 yesterday he played chess with his friend. 3 mum baked a wonderful cake the day before yesterday . 4 emali had a car in 2006 .5 in summer they travelled across europe 6 we installed an alarm system last week .

1 I didn't work at a factory three years ago.
2 He didn't play chess with his friend yesterday.
3Mum didn't bake a wonderful cake the day before yesterday.
4Emali didn't have a car  in 2006.
5They didn't travel across Europe in summer.
6They didn't install an alarm system last week.