1. The book was written *by* a famous author. (Prepositio, joka ilmaisee tekijän)
2. The cake was baked *by* my mother yesterday. (Kuka teki toiminnan)
3. The letter was sent *by* the postman. (Tekijä lähetti kirjeen)
4. The song was composed *by* a talented musician. (Keneltä sävellys tulee)
5. The house was built *by* skilled workers. (Rakentajat)
6. The painting was created *by* an artist from Wales. (Tekijän ilmaisu)
7. The speech was given *by* the president. (Kuka piti puheen)
8. The movie was directed *by* a famous filmmaker. (Ohjaajan prepositio)
9. The window was broken *by* the children. (Tekijät)
10. The problem was solved *by* the engineer. (Kuka ratkaisi ongelman)

1. The documents were signed *by* the manager. (Kenellä oli valta allekirjoittaa)
2. The meal was prepared *by* the chef. (Ruokaa valmistanut henkilö)
3. The song was performed *by* the choir. (Esittäjät)
4. The decision was made *by* the committee. (Päätöksen tekijät)
5. The essay was checked *by* the teacher. (Opettajan tekemä tarkistus)
6. The package was delivered *by* the courier. (Toimituksen suorittaja)
7. The rules were explained *by* the coach. (Ohjaajan tehtävä)
8. The photo was taken *by* a professional photographer. (Kuvaajan rooli)
9. The song was written *by* the band. (Tekijät yhtyeestä)
10. The invitation was sent *by* the host. (Kuka kutsun lähetti)