Is there an epidemic of laziness in the HSC these days?
There is seriously no point memorising creatives. Why? Imagine that you're in ancient Egypt, and you have to get past a Sphinx which is going to ask you a question - any question. If you don't answer correctly, you DIE. Painfully, with lasers and piranhas and things. Don't ask how the piranhas get to Egypt. That's not relevant. What's relevant is how you prepare to make sure you don't DIE.
Common sense dictates that you would try and get an idea of what questions the Sphinx has asked before, who's managed to not die, how they've done so, et c.
Memorising a creative is like saying "my answer to the Sphinx's question, regardless of whatever she asks, is going to be GREEN BANANAS."
You are far, FAR better off writing different stories every few days, experimenting with creative techniques (like imagery, dialogue, and so on), and getting a feel for what sounds authentic/legit and what sounds tropey/cliched/melodramatic. Even more than what strawberrye says, you should be working to improve how you generate ideas, as well as adaptations, to different visual and literal stimuli. Adaptation and improvisation, not rigid memorisation to arbitrary word-counts, is key to survival. And trust me, you don't want to be on the butt end of natural selection.