Réponse :

happy new year

Explications :

Kevin does his homework when back from school. → Kevin’shomeword is done by him when back from school

Karen writes an important email. ->an important email is written by Karen

They were serving tea. → tea was served by them

They will call the doctor. →the doctor will be called by them

They offered us a cup of tea. → a cup of tea was offered to them

Somebody gave her a book on wildlife. → He was given a book on wildlife by them

Peter made great progress. → great progress was made by Peter