Invitation to Russia. The missed lesson: a teaching book for independent studies of Russian as a foreign language. This teaching book is an indispensable part of the teaching complex “Invitation to Russia”. It is designed for the adult students who want to learn the Russian language for communication. The book describes typical communicative situations foreign students can face in Russia. The book is designed for independent working. Each chapter is provided with useful comments on the Russian phonetics, orthography, vocabulary. It includes recommendations on the methods of studies. There is a section with keys at the end of the book.