1)"Can you help me?" She said to me.

--->She asked if I could help her

2)"Can you explain the answer to me again, Lan?"Mai said

--->Mai asked If i could explain the answer to her again

3)"Please tell your son to write the lessons carefully, Mrs. Brown"Mr. Gates said

--->Mr.Gates asked Mrs. Brown to tell his son to write the lessons carefully

4) why don't you finish the work soon

--->You ought to finish the work soon

5)She said to him ,Don't leave your coat on the chair".

--->She told him not to leave his coat on the chair

1. she asked me if I could help her

2. Mai asked Lan if Lan could explain the answer to Mai again

3. Mr.Gates asked Mr.Brown to tell Mr.Brown's son to write the lesson carefully

4. You ought to finish the work soon

5. She told him not to leave his coat on the chair