試験の準備がどれだけうまくできるかによります

試験: exam, study, test, examination, trial, testing, experiment, pilot, experimental, quiz
の: to, of
準備: prepare, preparation, preparations, reserve, arrangements, readiness, provision
が: is, there, but, ga, will, however
どれ: how, what, which, which one, where
だけ: only, just, much, alone, merely, simply
うまい: good, fine, delicious, beautiful, nice, choice, wonderful, tasty, splendid, skillful
できる: can, be able to, be able, capable, manage to, accomplish, able to do
か: or, ka
に: in, to, on, at, into, upon
より: than, more, better, rather than, more than, from, greater, since, twist
ます: will, to be, i will, to make, to do, to have