1.We helped them last week. Did  we help them last week We didn`t help them last week. 
2.I fed my cat in the evening. Did I feed my cat in the evening I didn`t feed my cat in the evening.
3. They froze in the morning . Did they freeze in the morning They didn`t freeze in the morning.
4.I won in the competitions ... Did I win in the competitions....  I didn`t win .....
5. my son broke this. Did my son break this My son didnt break this.beatiful