Does anyone know approximately how much percentage I need to acquire to get grade 7 in CIE 0990 taking reading and directed writing paper??
No idea, sorry, but I would aim as I high as I can. I quickly just looked it up and, depending on what components you do, it ranged from 60 - 72. Sorry - not that helpful but I don't know what the different components are.
(Also, I assumed you were doing it as a first language but I don't know - sorry!