Помогите написать предложения в пассивном залоге

  • Помогите пожалуйста кто-то написать эти предложения в пассивном залоге. Заранее благодарен.
    1. Somebody will tell you where to go.
    2. A magnetic field affects the gamma rays.
    3. We had agreed on these matters long before we had chosen the field of our joint investigations.

  • You will be told where to go. The gamma rays are affected by a magnetic field. These matters had been agreed on long before the field of our joint investigations had been chosen.

  • Большое спасибо