Сделать из них отрицательные и вопросительные предложения в present simple tense 1.he called me last week 2.they were in the police station when i called them. 3.chris changed the light bulb in the kitchen 4.two years ago we went to colorado

1) отр: He didn't call me last week. вопр: Did he call me last week?
2 отр: They weren't in the police station when I called them. Вопр: Were they in     the police station when I called them.  ?
3) отр: Chris didn't change the light bulb in the kitchen. вопр: Did Chris  change the light bulb in the kitchen?
4) отр: Two years ago we didn't go to Colorado. вопр: Did we go to Colorado two years ago?