Срочно, проверьте правильность превода, пжлс)

1. Sometimes the weather in England changes very quickly. (Present simple active.)
2. This article is often reffered to. (Past simple active).
3. What are you doing here? — I'm waiting for my friend. (Present simple active).
4. He has not been seen for a long time.( Present Progressive passive)
5. I have already done my work. (Past simple active).
6. They spent their holidays in the mountains when they were students. (Past simple active).
7.…

The scheme adopted for the tunnel is of great technical interest. First of all the tunnel has a very deep grade. Actually it is so steep that the rack and pinion system had to be used to ensure a safe operation of electric trains in the tunnel.
The second feature of the tunnel is a great volume of earth-work involved in its construction. The first underground station is located at a height of 2,820 m. here galleries were bored through the rock…

Перепишите предложения, употребите глагол в нужной форме. Переведите предложения на родной язык.

1. They _____(to get) excellent marks at the exams.
они получили отличные оценки за экзамен- they got ......
2. I ____ (to meet) lots of new people, at the moment I _____ (to work) as a guide.- я встретил много новых людей, когда работал гидом- i met.....i worked
3. When I _____ (to look) at my suitcase I could see that somebody _____…