Why are you studying english 4 sentences please сейчас сегодня ​

На английском языкеПеревод на русский языкMemorable DayПамятный деньEvery man keeps in his memory a day which he remembered for life, because it left deep impression. Some people remember this day because of sad events but somebody because of happy and joyful events. 
The day, which sticks in my memory, is rather interesting. Once in summer I and my family went to rest, the father wanted to fish that’s why we went to the lake. The day was wonderful, the hot sun was shining, the gentle breeze was blowing, and rare clouds were floating in the sky. When we arrived to the place, we settled on the bank of the lake spread out tackles and food for picnic. We spent time cheerfully: played badminton, sunbathed, caught fish. A short time later, the company of men settled close to us, they talked loudly and laughed. We heard very familiar voice, it turned out that it was a cinema star, Marat Basharov with the friends. We thought that all stars are very proud and that he won't even want to speak with us. But we weren't right, Marat is very friendly and open person, he signed to us the autograph, with pleasure took pictures with us and even called to the theater on a performance in which he played. 
It was fine day which was branded in my memory and in soul.Каждый 

1. Coaxial cables were used in long-distance common-carrier communication. - WERE USED -

вс глагол для образования Passive Voice.

2. The important function of postal service is distribution and delivery of newspapers, magazines and other

periodicals to population.- IS - смысловой глагол

3. In order to deal with the intersymbol interference problem we are to develop a mathematical model for the

data transmission system. - ARE TO develop - эквивалент модального глагола для выражения

долженствования.

4. A ground radar system is providing information by which aircraft appraches to landing. - IS PROVIDING -

глагол для образования Continuos tense

5. These methods do not permit inspection of the objects while they are in motion. - ARE in motion -

глагол-связка в составном именном сказуемом;