Question

my friend said to me I did what I could do change into passive voice​

Answer 1

Answer; My friend told me that he did what he could

Explanation:Just change said to into told and I into he

Answer 2

Answer is:

Answer is:My friend told me he\she did what he\she could do.

Answer is:My friend told me he\she did what he\she could do.I hope it helps you