Subject is area of knowledge studied in schools or boarders.
This is not a strong hook. It fails to deliver a clear idea :( Better re-do the hook :)
If I would have opportunity to study a subject, I do not know yet.
This sentence is incomplete :( if you have the opportunity to study a subject, what would you do? You need to combine that answer here.
I think it is very interesting to
knowacquire knowledge about religion from bajuri, jannah, and om.
It is book that give many knowledges about Islam law until root it.
"knowledge" is a singular noun and there is no word "knowledges"