II. Use past perfect or past perfect continuous. 0. I (hear) about this book before I bought it. – had heard
1. I know I (study) more for the control work. –
2. My granny said she (work) in the garden. -
3. Alina called me before I (come) home. –
4. If I (learn) all the words, I would have got good mark on the test. –
5. He felt very tired when he came home as he ( play) football. –
6. It (rain) for two hours when I left home. -

There are always problems in a big city and there are many of them. In any big city, people face problems like traffic jams, air pollution, parking and public transport problems.

Traffic jams are most common in the morning and evening when people come and go to work. And some of the majority of them are late. In this case, I would advise you not to ride cars but on foot or on bicycles and scooters, because they do not create as many problems as cars. Cars pollute the air just like factories. Instead of factories, you can build farms where to grow pets and vegetables, fruits than there are all kinds of unnatural products that factories produce. As I said, cars create a lot of problems and parking is another problem. In the courtyards in front of the house, it is difficult to find a place where you could park your car, and therefore it is easier to ride bicycles and scooters, they can simply be put on the porch and locked with keys. Another problem is public transport. Public transport is a bus, train, airplane and they are all paid. But the prices are not the same. The bus is cheaper but it can be very crowded there. On the train, everyone buys tickets and everyone has their own seats. And on the plane you need to buy a ticket and you need to sit in your seat. But as if the scenes are not available to everyone, it would not be cheaper. And when it comes to money, everyone forgets what humanity is, and I think it's not right.

Объяснение:

Я это сама писала и раскрыла все проблемы, надеюсь

1.Nick showed the teacher the picture which he had drown.

2. The boy gave the girl the flowers which he had brought from the field.

3. Mother saw that Nick had not wished his hands.

4. I knew that my friend had not come yet.

5. When I woke up yesterday, parents have already gone to work.

6. The children thought that his father had not come yet.

7. Mary told us that she had cooked a good dinner.

8. Yesterday I found the book which I had lost in summer.

9. When we come to the station, the train have already left.

10. I had finished my test by the lesson was over.