The key to exercise solutions in chapter 6 - Grammar for the textbook Step Up Gold 2 with authors Philippa Bowen e Denis Delaney from Oxford University Press
Question
Scegli l'alternativa corretta.
Answer
I mustn't forget my calculator. I've got a Maths test today.
Children don't have to pay on buses in London. They're free!
Mum doesn't have to drive me to school. I get the school bus.
Tina! You mustn't play with electricity! It's dangerous!
You don't have to buy lunch at school. You can bring sandwiches.