Нужно перевести предложения в косвенную речьПервые три

Baron said If that was his trouble he could help him
The robbers thought that it was a shame to kill such nice poor girl
The noble Knight thought that he should take good care of his newhew
(Я не сообразила как переводиться)
The young girl begged that if he spared his life she should do his wish
The master of the castle said he should invite all noble knights to the forest
The young girl thought that she should put the ring on her thumb and go into the wall.