Замените действительный залог страдательным

1. The patient's skin is sponged by nurse. 2. Death is caused by a poisonous remedy. 3. Skin irritation is relieved by this healing ointment. 4. Healing ointments are administered by the doctor. 5. Не могу понять:( 6.A skin irritation was caused by that drug. 7. A medicine dropper was bought at the chemist's department. 8. Sleeping-draughts were prescribed by doctor. 9. A lecture in Histology will be delivered by Smirnov tomorrow. 10. My sister will be put on a sick-leave by the therapeutist tomorrow.