Final answer:
The sentences have been successfully converted from active to passive voice or vice versa. In general, the passive voice typically swaps the positions of the subject and the object in the sentence, with a verb to be and past participle.
Step-by-step explanation:
Here are the conversions of the sentences from active to passive voice or vice versa:
- A series of modern masterpieces were created by the artist.
- Jimmy Smith grew the winning tomato at the county fair.
- The Macy City High School Band performed the best performance of the night.
- A new car was given to Bobby by his parents for his graduation present.
- The completion of their final exams was celebrated by the students with a big party.
- The musicians played the flawless notes.
- The first case of flu this season was diagnosed by the doctor.
- The authors father wrote the introduction to the book.
Learn more about Active and Passive Voice