if you want to say that can I see all the questions but may is more polite and it also depends on that with whom you are talking if the person with whom you are talking is younger than you then you can use can but if the person is elder than you then use may.

it is that what you want to become?

if you are using noun then don't use pronoun the sentence is "Mina is a cheerful girl"

wrong write can I learn English

correct!!!! well done practice more

update your hello English app

I not only study for me but also for my parents.

correct !!!!

send your problem to @culturalley to solve your problem

don't use in word here