ok or not?

Hi long time no post i tink dis skin is better dun u tink so is clearer n nicer ok la everyday ad home dat day go library borrow books my mum is goin 2 bring me 2 sentosa soon yay i gona go lol n i juz finish my environmentalist n water ambassador now working on mathematician ok la i gtg off nn 1 mor thing i m so excited 2day d beijing ppl come bac i miss them lol especially ziwei so boring wifout her erm ok bye