Soluzione del esercizio 5 di Performer B1 Phases, Vol. 1

Esercizi svolti per il libro Performer B1 Phases, Vol. 1

Soluzione

  1. mustn't
  2. don't have to
  3. have to
  4. don't need to
  5. Do you have to
  6. must
  7. mustn't
  8. doesn't need