Упражнение 4: Превратите в отрицательные. Преобразуйте данные предложения, добавив пот (или сокращения isn't, aren't, am not) к вспомогательному глаголу. 1. He is playing football now. 2. They are watching TV. 3. I am reading a book. 4. She is helping her mother. 5. We are learning English. 6. The dog is barking. 7. You are running in the park