how well do u know TXT style messing

do u know what text style is... find out now!

1 what dose this mean "idk"
2 if someone wrote " hey hav fun in high skool c ya... kit" u would say
3 what dose " brb" mean
4 ur best friend wrote "gtg" u reply
5 meaning of " gud, kool,gtg,brb,kit"
6 do u hav a moblie
7 do u like this quiz