"I am your classmate" will remain in present tense in indirect speech because in "Robert will say to me" reporting verb is in future.
So when reporting verb in in future or present, we do not change the tense of the reported speech.
2. Bhaskar said to Kapil, "Please do come some time."
Bhaskar requested Kapil to do come sometime.
Bhaskar requested Kapil to come sometime.
Bhaskar asked Kapil to come sometime.
Bhaskar requested Kapil to please come sometime.
Answer: Option B
3. She said, " Ugh! I have hated him."
She exclaimed with disgust that she had been hated him.
She exclaimed with disgust that she had hated him.
She exclaimed with sorrow that she had hated him.
She exclaimed with disgust that I had hated him.
Answer: Option B
4. Ram said to Rahul, "You are a good player of cricket".
Ram told Rahul that he was a good player of cricket.
Ram told Rahul that he were a good player of cricket.
Ram told Rahul that he would a good player of cricket.
Ram told Rahul that he could be a good player of cricket.