The key answer of exercise 4
The key to exercise solutions in chapter Extra Book - Extra grammar 1 & 2 for the textbook Step Up Gold 3 with authors Philippa Bowen e Denis Delaney from Oxford University Press
Question
Which words in ex. 1 describe natural materials? Which ones describe artificial materials? Complete the table.
Answer
- Natural: wool, iron, rubber, silk, gold, cotton
- Artificial: denim, steel, ceramic, artificial