Sagot :
Answer:
They may ask questions even though they know the answer because they want to make sure that their answers are correct and as for people who don't know how to be grateful for other people's questions, actually not everyone is like that because most of those who ask and get answers are grateful by rating our answers. I'm not sure but sometimes they are like that.
HOPE IT HELPS!
DON'T FORGET TO MARK ME AS A BRAINLIEST IF YOU WANT. <33
Answer:
Because sometimes,some people become selfish and they just wanted things only for their selfs.Thank you