Soluzione del esercizio 6 di Performer B1, Vol. 2

Esercizi svolti per il libro Performer B1, Vol. 2

Soluzione

  1. haven't seen
  2. have you been doing
  3. 've changed
  4. 've been working
  5. haven't done / haven't been doing
  6. have you been attending
  7. 've already taken
  8. have you photographed
  9. 've become
  10. Have you shown
  11. 've put
  12. Have you browsed