Read the email again. What is each paragraph about? Have all the points from the notes been included?

Paragraph 1 - opening remarks (I have just read your advertisement...)/ reason for writing (I have a few questions that I would like to ask first)
(Абзац 1 - вступительное слово, причина письма)
Paragraph 2 - first note (I would like to know how much...) (Первая запись)
Paragraph 3 - second note (... the classes are small. How many students...?) (вторая запись)
Paragraph 4 — third/fourth notes (I would be very interested in...) (третья/четвертая запись)
All the notes have been included. (Все записи были включены).