D. Choose which sentence is correct when change from passive to active. Encircle the letter of your answer. Passive Voice: The uses of aspirin have been studied by scientists for many years. 10. A) For many years scientists have studied the uses of aspirin. B) Scientist have studied the uses of aspirin for many years. 11. Passive voice: The egg was boiled by Maria. A) Maria's egg was boiled. B) Maria boiled the cgg. Passive voice: A flower is held by Renzo. 12. A) Renzo holds a flower. B) A flower Renzo holds. E. Choose the correct nast and not​