Ответ:
1. Dominic could speak Spanish when he was a child
2. Clifford has free time, so he can help you
3. Can/Could I have a cup of tea?
4. Bernard can become a successful manager
5. Could you drive more slowly, please?
6. Can you help me to move that wardrobe?
7. I'm sure, Erin will be able to do that tomorrow
8. When Gabriela was younger, she could run very fast
9. Audrey won't be able to attend the meeting
10. Can you give us a lift?