Напишите 5 предложений с could и 5 с couldn'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 couldn’t speak for a long time.7. Kate couldn’t phone him, because she had lost his phone number.8. The girl couldn’t manage with that complicated task.9. She couldn’t invite all of them.10. He couldn’t notice it.