Передать предложение в неправильной языке: 1) mary said to the her friend "please do not mention it to anybody". 2) he said to me "thay are staying at the "europe" hotel". 3) my quest said to me: "you are an exellent cook.everything is so tasty".

Мария же сказала подруге: " не говорите об этом никому".
2) Он сказал: "они остановились в гостинице "Европа"".
3) мой квест мне сказал: "Ты отлично готовишь.Все так вкусно".

Косвенная речь нужна!
1Mary asked her friends not to mention that to anybody.
2He said to me that they were staying
at the Europe hotel.
3My guest said to me that I was an exellent cook and he added that everything was so tasty.