Помогите плиз, переделать в косвенную речь:1 My friend said to me,

Помогите плиз, переработать в косвенную речь:

1 My friend said to me, "I know that you are going to take part in our scientific conference".
2 Can you help me to translate this article?" my brother asked me.
3 The teacher said to us, "Please bring your dictionaries for the next lesson".
4 "What foreign languages do you study at your school" she asked.
5What foreign languages do you study at your school ?" she asked.
6 They said, "We haven't read today's newspaper yet".