Strategy
💡Expect more complex transformations at C1: double changes (prefix + suffix), internal spelling changes, and less common derivations.
💡Consider whether the sentence needs a positive or negative meaning — negative prefixes (un-, in-, dis-, mis-) are commonly tested.
Common Mistakes
⚠️Spelling is critical. At C1, you're expected to know tricky forms like "accommodation", "occurrence", "consciousness".
⚠️Don't assume the most common form is correct. Read the sentence — a less obvious derivative may be needed.
Time
⏱️About 10 minutes. If unsure, write your best attempt and move on.