Переведите предложения на язык обращая внимание на оборот there+be

1. В коридоре нет света, так как в нём нет окон.

2. Сколько секунд в минуте?

3. Существуют две широко используемые системы измерения: метрическая система и английская система

4. Позади школы было старое здание

5. В его речи было три основных темы.

1) В этом коридоре нет света, так как там нет окон
 2) Сколько секунд в минуте?
 3)  Существует две широко используемых системы измерений: Метрическая система мер и Английская система мер. 
4) На заднем дворе школы стояло старое здание
 5)  В его речи было три основных пункта

1. Men and women have equal rights. Мужчины и женщины обладают равными правами
2. These instruments were very useful for me yesterday. Эти инструменты весьма пригодились мне вчера. 
3. The air is a mixture of gases. Воздух - это смесь газов.
4. He had three lectures last week. У него было три лекции на неделе
5. All the angles of a square are right. Все углы треугольника равны
6. A surface has two dimensions: length and breadth. У плоскости два измерения: длина и ширина. 

Dear Emily,
Thank you for your letter. It was great to hear about your new house.
As for my new school it's very big! It has three computer rooms and wonderful sport facilities. Actually, it seems a nice place and I enjoy studying there. The kids in my class are very friendly.
I've already made some new friends and often meet after classes.
I've got only one new subject this year. It's Economics and I'm beginning to think that it's not difficult, after all!
By the way, what music styles do you enjoy? Have you got any favorite bands? Would you like to go to their concert? As for me, I prefer Radiohead. They are cool!
I'd better go now.
нууу. .. это как бы письмо не хозяину. ...

Dear Emily,
Thank you for your letter. It was great to hear about your new house.
As for my new school it's very big! It has three computer rooms and wonderful sport facilities. Actually, it seems a nice place and I enjoy studying there. The kids in my class are very friendly.
I've already made some new friends and often meet after classes.
I've got only one new subject this year. It's Economics and I'm beginning to think that it's not difficult, after all!
By the way, what music styles do you enjoy? Have you got any favorite bands? Would you like to go to their concert? As for me, I prefer Radiohead. They are cool!
I'd better go now.
нууу. .. это как бы письмо не хозяину. ...