Eight gaps. A root word is given in capitals at the end of each line — you must change it (prefix, suffix, sometimes both) to fit the gap grammatically and semantically.
Strategy
Identify the word class needed: noun, verb, adjective, adverb
Check if a negative prefix is needed (un-, in-, dis-, mis-, ir-, im-)
Be aware of multiple changes — e.g. ABLE → INABILITY (prefix + suffix change)
Watch plural and verb forms — "decisions" not "decision" if needed