10. Поставьте следующие предложения в вопросительной форме (§ 60): 1. W. Bentley’s whole life was devoted to the study of snow structures.2. This microscope will be used for the study of snow particles. 3. A brown snowfall in Chicago was caused by a dust mixture. 4. This pupil will be asked at the next lesson. 5. Bread is cut with a knife.