Answer:
1. He told me, "I had just returned from Delhi"
2. He said that he can drive a car
3. He said, "Nalini had arrived on Sunday"
4. She said she always listen to music.
5. She told me that I ought to thank him
6. Rishi said, "I am thinking of buying a laptop"
Step-by-step explanation:
Direct speech is also known as reported speech and is used to repeat the words of another person verbatim.
Reported speech is retelling someone's words without using quotes.