IELTS Practice Lab™Language Lab · Vocabulary
V3 · adaptive A2–C1
Vocabulary · drill V3

Word families

One root, four forms. Choosing the one the sentence has room for.
How this drill works, and why it is built this way›
  • Band 6 and band 7 both mention “errors in word formation”. This is that error, and it is the easiest one in the whole exam to remove.
  • You already know the word. You are choosing its shape: analyse · analysis · analytical · analytically.
  • The trick is to look at what sits before the gap. A or an or the or an adjective means a noun is coming. Is or being means an adjective. A verb nearby means an adverb.
  • Learn families, not words. When you meet a new word, write all four forms at once.

Worked example

The scheme has had a significant ______ on rural literacy.
A impact  ·  B impactful  ·  C impacted  ·  D impacting
Answer: A impact
A significant is an article plus an adjective, so a noun must follow. All four options mean the same thing; only one has the right shape. The point: read the word before the gap and it will tell you the form.
Moderate · CEFR B1 around band 5 – 5.5 change level:
The drill moves you up or down on its own. Two good sets and it gets harder; two hard ones and it steps back. The band range is what this level practises for — it is a guide, not a score. Only your first answer to each item counts towards the level decision. Your answers and explanations open after the set is complete, the attempt is saved and your email is verified.

Set complete

Language Lab · V3 · build 2026-09-05 · tiers measured against Claude LANGUAGE_LAB_SPEC_2026-08-30.md · © 2026 Rosemounts Institute
Answered: 0 / 8 Answer every item, then finish the set.