Помогите пожалуйста.. очень надо.. Что-то уже попробовала решить, может неверно, так что жду вашей помощи)

Исходя из правила:
http://nativenglish.ru/index.php?option=com_content&task=view&id=85
1 задание
1 - b.
2 - c
3 - c
4 - a
5 - a
6 - a
7 - с
8 - с
9 - a
10 - b
2 задание :
1.New medicine has been prescribed by the doctor.
2.It has been explained to us by the teacher.
3.Has the composition been written yet?
3 задание:
1. When were these trees planted?
2. Will we be met at the station? - (They will meet us at the station?)
Наверное, можно и так спросить, но это явно не по-английски )))
3. Have the doctor already sent for? -
5. The letter will be received tomorrow by this time?

1.
1)b
2)c
3)c
4)a
5)b
6)a
7)c
8)c
9)a
10)

2.
1. New medicine was prescribed by the doctor.
2. It has been explained to us by the teacher.
3. Has the composition been written yet?
4. This watch can’t be repaired by the watchmaker
5. This room has not been slept in for years
6. The man was being looking at in great surprise
7. The light is turned on when it is dark
8. Is that accident being discussed?
9. Will this work have been finished by tomorrow?
10. The house looked pretty after it had been painted

3.
1. When were these trees planted?
2. Shall we be met at the station?
3. Has the doctor been already sent for?
4. When I came Katya was being asked
5. The letter will have been received by this time tomorrow
6. This composition had been written before we knew about it
7. A test is being written there now