Помогите 3 и 4 умоляю

1. I was tired last night

2. He was in the garden five minutes ago

3. Children were very friendly yesterday

4. It was very cold yesterday morning

5. We were busy last week

6. Peter was in the supermarket an hour ago

1. I wasn't at school ten minutes ago

2. It wasn't very hot last week

3. They weren't happy yesterday

4. She wasn't hungry two hours ago

5. We weren't in Paris last year

6. My favorite color wasn't blue many years ago