I thought they dislike it if you copy and paste, you have to write the sentence in a different way? Anyway i suck at reading and responding in japanese
Responding in japanese is the worst.
Whats better for reading and responding in japanese (and listening):
-Leaving answers blank and answering 1 question you are sure on
-Answering the 1 question you know but just having a wild guess at the others?
Pretty sure it's absolutely fine to copy and paste.
Don't ever leave anything blank. Even if you think it's ridiculous, write it down. I understand your hesitation because I feel self-conscious sometimes if I hand up work to the teacher and it's all totally random guesses...And you think that they think you're dumb or something. But to the VCE examiners you're just a number so they won't know who you are if you make a fool of yourself =D
I was more worried about losing marks because it may be irrelevant, or yuo sentence structures may be wrong etc...
But i suppose a page of well written japanese should be ok :/
Gahhh.... i struggle so band when the string kanji together and they have different meanings/pronunciations 
Ohh. Yeah I do that a lot actually... Well in regards to the sentence structures, you can't really do much to help that except revise your grammar now.
But the irrelevance thing is hard... I guess just look at how many marks each question is allocated. Or, with the responding in jap part, just write what you definitely know. Look up words you don't know... Stare at your notes for a while to see if you can figure out the meaning... If it were me I'd be too scared to not put stuff in but that's probably a bad idea.
I say all these things based on my instincts so by all means, you can reject my advice haha. Everyone approaches these things differently.
Essentially I think you should just go with your gut feeling though...