Sit down and be quiet! What type
of sentence is this?​

This is an imperative sentence.

Explanation:

Imperative sentence is a sentence expressing an order or request or advice.

Imperative sentence

Explanation:

Imperative sentence includes command and request. In that case above, it's a command since there were no polite words used. I hope it helps.

well so many people believe its a sin to be gay or be apart of the lgbtq+ community, but i believe you should be you. don't let people tell you you cant be someone. be who you are because you will be uncomfortable your whole life. be you!