Помогите пожалуйста с химией. ОЧЕНЬ НАДО

Помоги пожалуйста надо прямую речь перевести в косвенную Ann said,"I didn t buy anything at that shop".The boy said ," I am not hungry at all".The teacher said,Nick does not know the rule".My friend said,"I didn t recognize him".The boy said,"My name is Paul".The hirl said,I am doing my homework".He said,"I was there in 1945".She said,"I saw him at 5 o clock".