Напишите следующие предложения во множественном, числе : 1. We translated this article at our English lessons. 2. Summer

1. We translated this article at our English lessons. — We translated these articles at our English lessons. 2. Summer wasn\'t very hot in that part of the country. — Summers aren\'t very hot in those parts of the country. 3. Will he present this paper to physical journal? — Will he present these papers to physical journals? 4. Take that book off the table. — Take those books off the table. 5. This alloy is very hard. — These alloys are very hard.