Перевести в косвенную речь peter said to his little brother , you mustnt open this door. she asked, was this man a doctor ?

Peter said his little brother not to open the door.
She asked, if this man was a doctor.

Peter said to his little brother not to open the door
He asked me why I always came home so late
She asked if that man was a doctor
Kate said to me that she had finished my book and that it was very interesting
The teacher said that the Earth goes round the Moon?
The British Prime Minister said about Russia being a great country
My friend asked me whether he should come to my place or stay at home