The Reading and Use of English paper (Part 1) often provides four words with almost identical meanings. The only way to choose the correct one is to know the collocation. For example, while "swift," "fast," "quick," and "speedy" are synonyms, only "quick" correctly completes the phrase "a quick glance." Using "a fast glance" would be considered an error at this level.
Our grammar modules focus on these "synonym traps." By training your ear and your memory to recognize natural word pairings, you reduce the time needed for Part 1, leaving more room for the challenging Part 4 transformations.
Furthermore, C2 English requires you to understand register. A phrasal verb like "to mull over" is appropriate for a thoughtful article, while "to consider" might be better for a formal report. We highlight these differences across our thematic collections.