Составить 5 предложений с "didn't"

1. My brother and I didn't go to the concert of this famous singer because we could not buy the tickets.

2. The children didn't go for a walk in the park yesterday as they were doing their homework the whole evening.

3. My mother didn't bake a cake last Saturday because she was very busy at her work the whole day.

4. My sister didn't go to school last week as she was seriously ill.

5. The teacher didn't give us much homework because we worked hard at the lesson yesterday.