Fill in the gap: "He is vegetarian, so he _____ eat meat".
- A doesn't ✓
- B don't
- C isn't
Risposta corretta: A
Spiegazione
Alla forma negativa del present simple, in terza persona singolare si usa 'doesn't' seguito dal verbo base: 'he doesn't eat'. 'Don't' si usa con I/you/we/they.