Ладно, напишу, ток у меня у самой не все правильно)
1. незнаю
2. Who was sent for the doctor?
3.The letters was already sent, haven't they? (Там типа ошибкак какая-то, но какая я не знаб)
4.By whom was America discovered?
5.Will the exam be passed next week?
6.The money had been paid before the car was delived.
7.He called, when the letter was being dictated.