Answer:
Tu is informal, usted is formal.
Step-by-step explanation:
When using usted instead of tu, you want to think of who you're talking to. Your teacher or your parents would be usted, your friends would be tu.
1) tu 2) usted 3) usted 4)usted 5) tu 6) usted
usted is used as a form of respect and tu is used for like your friends or someone you've known a long time
5.2m questions
6.8m answers