Print a paper and sit it the way the real one is sat.

Every paper here can be downloaded as a question booklet laid out like the printed test, with a separate answer sheet you fill in by hand. Doing it on paper puts back the three things a screen removes: you have to write the answers, you have to copy them onto the sheet, and the Reading test gives you no extra time to do the copying. A candidate who has only ever practised on a screen usually discovers that on the day.