Dinner hasn't been made by the chef.
A dinosaur egg has been found by an explorer.
The baby will be looked after by Mrs Gates.
He won't get taken home after the party (by them).
by them am scris intre paranteze deoarece este optional. Atunci cand complementul de agent nu este foarte important sau nu schimba sensul propozitiei, nu e nevoie sa il mai scriem.
