B1
something that you do to help someone
Dictionary examples:
Can you do me a favor? Please don't tell my mom I ate all her cookies! (0.0)
My neighbor asked for a favor: to water his plants while he's on Mars. (0.0)
I did my dog a favor by eating his homework. He was very confused. (0.0)
She called up to ask me a favor. (23.2)
Could you do me a favor - could you give this to Sean, please? (44.6)