How it works

• Twenty-five questions, one at a time. You see the answer and the rule behind it straight away.
• Every question links back to the section it came from, so a wrong answer tells you what to re-read.
• The question set and the option order are reshuffled on every attempt — except for a handful of fundamentals, such as subtitle casing, which come up every time.
• One attempt every 30 seconds.

The 30-second limit is stored in this browser, so clearing site data or using a private window resets it. It is here to make you slow down and read, not to police you.