Определите по грамматическим признакам, какой частью речи являются слова, оформленные окончанием –s и какую функцию это окончание выполняет, т.е. служит ли оно: а) показателем 3-го лица ед. числа глагола в Present Indefinite;
б) признаком мн. числа имени существительного;
в) показателем притяжательного падежа имени существительного.
Переведите предложения на русский язык.
1. Students do research at the institutes.
2. Cold means the absence of heat.
3. One of the Fermat’s outstanding contributions to mathematics is the founding of the modern theory of numbers.

This couple is 60 years old. The old lady is engaged housework, the Grandfather is engaged in garden and farm. Every weekend they go to the market. This couple has children and grandchildren from children. Grandchildren come to them for summer holidays. The couple herself lives in Great Britain, in a small village.

They have an old dog, Loyd, who's 10 years old. The Old Lady and Grandfather, after a long job, like to rose a fire and sit near it, along with their dog. This thing came into their lives as a tradition, and now every night they sit down at the fire, telling us how their day went.

надеюсь

Smiths have a dog and a cat. 

I have a sister. My sister is a teacher. 

Titanic sank on April 14, 1912.

Excuse me, how can I get to the National Gallery?

His dream is to become an editor of the Times one day.

It takes about an hour to get from the Domodedovo airport to the Lenin street. 

My friend usually goes to Alps in the spring by a plane. 

The Volga is a longest river in the Russia.

I had my holiday in the northern Italy last year but I’m going to cross Atlantic ocean and visit the USA next year.

Great Britain is situated on two large islands.