i'm not a native speaker. i'm currently junior and i studied mandarin starting from grade 3 (it's mandatory in our school) last year i took the test and i thought i totally screwed up the test, especially in the speaking/culture part because half the time i didn't know what i was saying and the other half of the time, i was repeating myself three or four times but i ended up getting a five.

so, just try to learn a lot about the culture and stuff. the rest was pretty easy.