Напишите 5 предложений с could и 5 с couldn39;t

1. I could go to the theater yesterday.

2. My grandmother could speak English very good.

3. Only he could help me.

4. He could spend all day playing computer games.

5. They could visit him any time.

6. We couldnt speak for a long time.

7. Kate couldnt phone him, because she had lost his phone number.

8. The girl couldnt manage with that complicated task.

9. She couldnt invite all of them.

10. He couldnt notice it.