What kind of books are the most popular?
What kind of books are in demand?
You work at a bookstore. What kind of books are in demand? / Ты работаешь в книжном магазине. Какие книги людям нравятся?
What kind of books are the most popular?
What kind of books are in demand?
You work at a bookstore. What kind of books are in demand? / Ты работаешь в книжном магазине. Какие книги людям нравятся?