Here is a quick reminder for Word Formation.
The grammar around the gap tells you exactly what the new word should become. Do not look at the base word first. Look at the sentence.
Example:
She gave a very ___ answer. (CONFIDENCE)
The word goes before a noun, so you need an adjective.
confident, not confidence or confidently.
This is the key to Part 3. You change the word to match the sentence, not the other way around.
π Comment one base word that always confuses you in Word Formation.
I will help you transform it.