1) yuri had been working on his computer for two hours before it broke down. 2) i was mopping the floor while my brother was cutting the grass. 3) were you sleeping when the earthquake started? 4) this time last week, i was flying to paris. 5) sam was really happy because he had passed all his exams. 6) sarah had cleaned the house by the time her barents came back. 7) james had waited for a while and then opened the door to see who was making that strange noise. 8) marion didn't go shopping because she spent the morning with her little brother that day. определить время у каждого предложения.

1)Past Perfect Continious(продолжавшийся до определенного момента в процесс с обозначением периода,есть for...before)
2)Past Continious(два параллельно происходивших действия)
3)Past Continious/Past Simple(Процесс,во время которого произошло действие)
4)Past Continious(процесс в времени)
5)Past Simple/Past Perfect(см.6)
6)Past Perfect/Past Simple(действие,произошедшее раньше другого в
7)Past Perfect/Past Continious(действие,закончившееся раньше другого в
8)Past Simple(на это указывает didn't)

1. The peseta, the frank, and the lira were replaced by the euro in 2002.

2. This book was written by ...

3. This book was owned by ...

4. At school, we are heated by gas.

5. Hamlet was written by Shakespeare.

6. The first PC was manufactured by IBM.

7. The United Kingdom is formed by three countries.

1. Kennedy was assassinated in 1963

2. Everest was first climbed in 1953

3. The Titanic was sunk by an iceberg in 1912

4. Second World War was declared in 1939

5. Atlantic was first crossed by plane in 1919

6. Pearl Harbour was attacked in 1941

7. A man was launched into space for the first time in 1961

8. The first IBM PC was sold in 1981.

The time the homework is performed is always different .It depents on several circumstances:such as difficulty of tasks or its quantity.The subject that i usually start with is Math.I do so because i believe that it is easier to start with hard subject and end with lighter one.About homework,indubitably,it is necessary, because of it we revise material and eliminate misunderstandings.But ,as it oftenly happens , quantity of homework is not always considers interests of pupils.They are forced to learn big poems by hard or to read 100-200 pages for a few days.Interest and after school activities are not considered, so children sometimes don`t have enough free time , they even do not have enough time to sleep.So ,as for me , there should be less homework , but if pupil want ,he can take more.But it is only my opinion