1. The captain congratulated his boys, saying they had done well.
2. He asked her why she was reading that book.
3. He inquired whether her cow kicked. (In this case, "inquired" is a more formal way to ask about something you're not sure of.)
4. He told his brother that Shailesh had broken his glass.
5. Our teacher explained that the earth revolves around the sun.
6. He questioned why I had come there.
7. Usha expressed her gratitude to her father for his kindness.
8. The teacher instructed the boys not to make noise.
9. He wished his friend prosperity in business.
10. The officer ordered the peon to allow the visitor into his office.