Sentence examples for they allow from inspiring English sources

"they allow" is correct and can be used in written English.
It is a complete sentence on its own, as it has a subject (they) and a verb (allow). You can use "they allow" when talking about someone or a group of people giving permission or granting access to something. For example: - The school has strict rules, but they allow students to wear casual clothes on Fridays. - Some zoos allow visitors to feed certain animals, such as giraffes or goats. - My parents allow me to stay out late on weekends, as long as I let them know where I am.