Whic verb is on irregular one
To visit
To Wolk
To remember
To see​

1.I (was working) on the final report all night.
2.I (was trying) to get in touch with you all day yesterday.
3.My car broke down while I (was driving) from Perm to Ekaterinburg.
4.I (was leaving) the building when he arrived.
5.Yesterday they (were preparing) for the seminar on Banking and Finance.

Exercise 2.
...and I am sure you will remember that in the 1990s and the company's sales (were declining), we (were losing) market share progressively,we (were not investing) enough in research and development we (were not training) our key personnel in order for them to use the new technologies.
So, when I (became) Chief Executive Officer in 2006, some tough decisions had to be taken. I (restructured) the managment hierarchy, (encouraged) early retirement, (cut) costs by 25%, (increased) efficiency by imposing greater flexibility and (closed down) three of our factories.

Exercise 3.
 1. Tomorrow at 9 o' clock we (will/shall be making) a very interesting experiment.
2. This time tomorrow I (will/shall be skiing).
3. Good luck with the exam. We (will/shall be thinking) of you.
4. Professor Brown (will be giving) another lecture at the same time next week.
5. She (will be working) here for another 5 years.
6. I (will/shall be leaving) here at 3 o' clock.

                                       My Dream classroom.
I would like the classroom of my dream to be large and light.The classroom of my dream would have computers on each desk.The classroom would have  good comfortable new furniture. In winter the classroom would be warm.There would be plenty of plants in the classroom.There would be a smart board on the wall. The children and teachers would be kind and polite. They would be intelligent and would respect each other. This is the class of my dreams.
Класс моей мечты.Я хотел бы, чтобы класс моей мечты был большим и светлым. В классе моей мечты на каждом столе были бы компьютеры. В классе была бы хорошая и удобная новая мебель. Зимой в классе было бы тепло. В классе было бы много растений. На стене была бы 'умная доска'. Дети и учителя были бы добрые и вежливые. Они были бы умными и уважали друг друга. Это класс моей мечты.