Change these sentences into reported speech

Change these sentences into reported speech:
1. "Do you want to visit Ha Long Bay, Lan?" I said.
→ …………………………………………
2. "Does your brother study at a university, Nam?" Quang asked me.
→ …………………………………………
3. "Is Ha Long Bay in Northern Viet Nam, Phuong?" Mary asked.
→ …………………………………………
4. "Do many tourists visit Phong Nha Cave every year, Lan? Peter asked.
→ …………………………………………
5. "Are you free this evening?" I said to him.
→ …………………………………………