. Преобразуйте следующие предложения в вопросительные и отрицательные: 1. There are two reference books on the shelf. 2. There is a lot of discussion about language learning now. 3. There is a set of grammar exercises in this text book. 4. There are some cours¬es for beginners at the University. 5. There are some booklets here. 6. There is some sense in what he proposes.