Internal Word Changes Exercises

Internal word changes are word formation answers where the base word changes inside, rather than only taking a simple ending. A verb, adjective, or noun may change its vowel, spelling, or final sound: strong becomes strength, long becomes length, and advise becomes advice. These forms are common in exams because they test whether you know the word family, not just a suffix rule.

The sentence still gives the main clue. Articles such as a, an, and the often point to a noun. A verb after a subject may need a past form, and a phrase after an adjective may need an abstract noun. Some items in this set are suffix-only exceptions, so do not assume every answer changes inside. Instead, ask what word type is missing, then recall the natural member of that word family. This B2 practice is especially useful for irregular noun forms and advanced spelling awareness. Review each completed noun against the sentence meaning.