Soluzione del esercizio 4 di Performer B1 Phases, Vol. 1

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

Soluzione

  1. don't have to have
  2. mustn't enter
  3. doesn't have to revise
  4. mustn't use
  5. don't have to bring
  6. doesn't have to catch
  7. mustn't step.