=>
1. New employees are always wellcomeed by the manager.
2. She was given a present by Janet's colleagues when she retired.
A present was given to Janet by her colleagues when she retired.
3. An armchair which can play music has just been invented by Stephen Court.
4. The problem is being studied carefully by the scientists.
5. Two children were found in the forest by the police.
6. Wild animals are being killed for food.
