The correct answers are Three heavy boxes of books and Several comfortable pillows.
In English, you must add -s or -es to show that there is more than one countable item (boxes, books, pillows).
However, uncountable nouns like furniture, information, or water do not take an -s. "Two new wooden furnitures" is incorrect; you would say "Two pieces of wooden furniture."
Grammatical number
- ✅ The data show… — ❌ The data shows… (traditionally plural)
- ✅ Each student has a book. — ❌ Each student have a book. (each = singular)
- ✅ The team is ready. (BrE: are also fine) — collective noun
- ✅ children, mice, teeth — irregular plurals (no -s)
Grammatical number = singular vs plural on nouns, pronouns, and verbs. Nouns usually add -(e)s; verbs must agree with their subject's number.
Trap: collective nouns (team, staff, data), quantifiers (each, every = singular; both, several = plural), and irregular plurals (children, criteria, phenomena) all cause agreement errors.
Countable and uncountable
- ✅ some advice — ❌ an advice / advices (uncountable → no article, no plural)
- ✅ a piece of furniture — ❌ a furniture / furnitures
- ✅ How much water? — ❌ How many water? (uncountable → much)
- ✅ fewer people — ❌ less people (countable plural → fewer)
English nouns are either countable (take a/an, form plurals, use many/few) or uncountable (no plural, use much/little). The choice is partly arbitrary and must be memorised.
Test: can you put a number in front? Three chairs → countable. Three furnitures ❌ → uncountable. Use a unit phrase instead: three pieces of furniture.
A2 | Elementary | Pre-intermediate
- ✅ I went to the cinema yesterday. — past simple
- ✅ I have visited Paris twice. — present perfect (life experience)
- ✅ If it rains, I'll take an umbrella. — first conditional
- ✅ You should see a doctor. — modal for advice
These patterns are A2 — the second CEFR level. At A2 you move past survival phrases into real grammar: past tenses, the present perfect, basic conditionals, and modals for advice/obligation.
Marker: if you can describe yesterday and give simple advice, but struggle with abstractions or nuance, you're at A2.
Easy
- She is a teacher. — one verb form, one rule
- I have two cats. — basic possession, short sentence
- He doesn't like coffee. — simple negation with do-support
- Only one answer is clearly correct; distractors are obviously wrong.
Easy marks beginner-level challenges: A1–early A2, one rule at a time, everyday vocabulary, no trick questions.
Use "Easy" when you want to build confidence on a specific rule without interference from other grammar or tricky contexts.