Поставьте глагол в нужную форму .используйте past simple,past continuous ,past perfect или past perfect continuous:
1)when i (go) to the shop,i (see) my friends
2)(she/finish)making the lunch when the guests arrived?
3)Mary (watch) TV while her little brother (play) with the kitten/
4)I (eat) my lunch before he (come)
5)How long (you/study) French before you first visited France?
6)"Lisa was exhausted yestarday".-"I know .She (study) for a history exam all day".
7)Kate (go) out wuth her friends after she had finished her homework.
8)Dr. Stephens (perform) a lot of experiments before he made an important discovery.
9)How long (you/wait) before the bus arrived?
10)I (dream) about this camera all my life.
2. Whatever you do, you mustn't touch that switch. It`s very dangerous.
3. You mustn't forget what I told you. It`s very important.
4. We don't have to leave yet. We`ve got plenty of time.
5. Ann was feeling ill last night. She had to leave the party early.
6. I had to go to the bank yesterday to get some money.
7. The windows are very dirty. I must clean them.
8. The windows aren`t dirty. You don't have to clean them.
9. We arrived home very late last night. We had to wait half an hour for a taxi.
10. These cakes are very nice. You must have one.
11. We don't have to take an umbrella. It`s not going to rain.
A population of 374 174 persons (1 October 2015)[4]. Area — 124,538 km2.
The city is located in the Eastern part of Vitebsk region on the banks of the Western Dvina river. The second most ancient city in Belarus after Polotsk. Fourth by population (after Minsk, Gomel and Mogilev) city in the country.
The town was founded on the high banks of the Western Dvina and Vitba, which gave him the name that is on the way "from the Varangians to the Greeks". As the urban legend of the 18th century it was founded by the Saint equal to the apostles Princess Olga. The city was formed as one of the centres of the Association of Slavic Krivichi, and a convenient geographical position at the crossroads of major trade routes contributed to the growth and prosperity over the next centuries