幫check grammar

As you know, there are many tutorial [centres] in Hong Kong. Also there are many
famous [tutors] in Hong [Kong]. They dress like [x a] historical figures in the advertisement. I think [they look] stupid.


Although [the tutorial classes] can improve our [results ,] [x but I think] [they] only focus on public examinations [and] [cannot] help [x the] [students] [x for] [gain] more knowledge.


I think this is the [problem of] Hong Kong's education system [x problems]. [Many tutorial centres exist in Hong Kong simply] because many people in [Hong Kong] think that [x if] [one will not have a successful life if he/she fails in the public examination.]

As you know, there are many evening classes with well known tutors in Hong Kong.These tutors dress up with outfits like the historical figure as shown in the advertisement and I observe they looked rather ugly.
Although these evening classes can help students to get higher marks in public examinations but that don't raise their standards of knowledge.
I think that is the problem with which Hong Kong's education system being confronted. It is because many people thought that if the student failed in the public exam, then he won't have a bright future. that's why there are so many evening classes in Hong Kong.