Преобразуйте следующие предложения в вопросительные и отрицательные(!!!!!!Continuous!!!!!)
1.The students are listening to the lecturer 2. Students are completing check ques- tions. 4. Teachers are discussing merits and demerits of the new approach in language teaching. 5. John was working at his project all night. 6. At the last lecture doctor, Smith was encouraging us to ask questions