Reported Speech - Interrogative Sentences

" Did you study hard?" She said to me.

" Who have been working today?" Maria said to me .

She said to him," Why have you been reading these books?''

He said, “Why are you going to market?”

Raja said to Rehan, “Are you going home today?”

She said to me , ''Can I use your phone?''

I said to her , '' What were you eating?''

They told me , '' Have you gone to London?''

He said to me , '' Did you meet your friend?''

He said to her , '' How will you help me?''