Преобразуйте предложения из действительного залога в страдательный. 1. The teacher is explaining a new grammar rule.

1. The teacher is explaining a new grammar rule. - A new grammar rule is being explained by the teacher. 2. They offer a wide choice of topics for our compositions. - A wide choice of topics for our compositions is offered by them. 3. She started her literary career by working on the staff of the almanac. - Her literary career was started by working on the staff of the almanac. 4. By three o’clock yesterday they had arranged everything for the experiment. - By three o\'clock yesterday everything for the experiment had been arranged by them. 5. Prof. Brown will deliver the lecture on lexicology. - The lecture on lexicology will be delivered by Professor Brown.