Question

Rewrite the sentences in the pasive voice. Include the agent only where necessary :
 
  5. Animal rights groups around the world are organising campaigns against animal testing.
  6. More and more companies are using new irritancy tests.
  7. Researchers in the U.S.A. are developing new and better methods for testing cosmetics.
  8. They are also developing new and better methods for testing products.

     Please help me !

Answer 1

5.Campaigns against animal testing are being organized by animal rights groups.
6.New irritancy tests are being used by more and more companies
7.New and better methods for testing cosmetics are being developed by researchers in the U.S.A
8.New and better methods for testing products are also being developed. (by them)