Преобразуйте предложения поставив глагол в страдательный глагол 1. They carry out

Преобразуйте предложения поставив глагол в страдательный глагол 1. They carry out different experiments in the chemical laboratory 2. After each lesson we ventilated our classes 3.The students place laboratory vessels in the tables 4. In a year we shall equip our chemical laboratory with modern apparatuses 5. Fahrenheit introduced a new scale into the experimental work in the seventeenth century 6. Laboratory workers obtain large amounts of distilled water by distillation 7. After the experiment was over we recorded all the findings