Необходимо превратить утвердительное предложение в вопросительное, как в примере.
Преобразуем каждое предложение в вопросительное, вынося вспомогательный глагол do/does/is/are в начало предложения.
Ответ: 1. Is the teacher speaking English now? 2. Are the pupils reading in the library? 3. Are they writing Exercise 2 in their exercise-books? 4. Is the man waiting for Pete? 5. Is the woman listening to the radio? 6. Is the family watching TV? 7. Are the children doing their morning exercises? 8. Is Boris washing his hands? 9. Is it raining? 10. Is it snowing?