Answer :
To rewrite sentences using short forms, also known as contractions, you'll need to combine a pronoun or noun with a verb using an apostrophe. Here are the rewritten sentences as requested:
John's not a doctor.
It's not a small office.
Where's James from?
It's a small school.
He's a taxi driver.
Contractions are useful because they make sentences sound more casual and conversational. Remember to pay attention to punctuation and capitalization when forming contractions, as improper use can lead to confusion or informal writing. In formal writing, you might avoid contractions to maintain a more formal tone.