what is a context sentence?
Perhaps there is some irony in asking this, but in what context did you see this phrase?
My guess is that it is someone's version of "topic sentence".
Students: We have free audio pronunciation exercises.
IT IS JUST A SENTENCE A NORMAL ONE! D: actually i don't really know D: D: D: LOL XDEmotion: fingerEmotion: swear
Students: Are you brave enough to let our tutors analyse your pronunciation?