They fail because they practise randomly, misunderstand the timing pressure, and never learn the patterns behind the questions.
Every paper is pitched at the real difficulty of the exam and built around the patterns examiners actually test — so you train at the level the test demands, not below it.
Questions written to the true standard and style of the real TMUA — pitched high, never watered down.
Practise under the exact clock that catches most students out, until pacing becomes instinct.
Learn the recurring structures behind the questions so you recognise them instantly on test day.