Помогите, пожалуйста!диалог в косвенную речь В-2.I.A: Your brother is a student,

Помогите, пожалуйста!
диалог в косвенную речь
В-2.

I.
A: Your brother is a student, isnt he?
B: Yes, he is. He is studying to become an economist.
A: He used to like English, didnt he?
B: Yes, he did. He used to like it. Boris is fond of foreign languages.
A: Does he take part in students' scientific work?
B: Yes, of course. And he applies his acquired English in his research work.

II.

A: When will your exams begin?
B: Oh, they are not far off. Here is the time-table of my exams.
A: You are afraid, arent you?
B: Of course, I am. I am afraid, I can fail in mathematics.
A: Mathematics is my favourite subject. I think, I can help you to prepare for exams.
B: Thank you very much.

III.

A: Do you like the lectures on economics under Professor Petrov?
B: Yes, of course. He is a very good lecturer and I havent missed a single lecture.
A: Do you take notes of all his lectures?
B: Yes, I do. It will help me to prepare for exams.