A1
used when agreeing to do something or when allowing someone to do something
Dictionary examples:
"Can I be the teacher today?" "OK, but no homework!" (0.0)
"Can I be your best friend?" "OK, let's shake on it!" (0.0)
"Can we have pizza for breakfast?" "OK, just this once!" (0.0)
"Could you pick me up at the train station?" "OK, what time?" (61.4)
"I'll pay you back tomorrow." "OK, no problem." (63.9)