Soluzione del esercizio 8 di Performer B1, Vol. 2

Esercizi svolti per il libro Performer B1, Vol. 2

Soluzione

  1. has been
  2. 've been decorating
  3. have you been doing; 've been swimming
  4. has finished; has handed
  5. 's been browsing; 's found
  6. have you been listening
  7. has been cooking
  8. has the secretary typed; 's used