To show possession, for singular nouns, place the apostrophe before the "s" (e.g., the girl's book); for plural nouns, place the apostrophe after the "s" (e.g., the dogs' toys). To form contractions, replace the missing letters with an apostrophe (e.g., don't for do not, it's for it is).
@bot write three sentences each using comma in different ways. Explain why the comma is needed in each sentence
