Soluzione del esercizio 8 di Step Up Gold 3

Esercizi svolti per il libro Step Up Gold 3

Soluzione

  1. I've had this games console for three weeks.
  2. The World Wide Web has existed since 1989.
  3. Morgan has been in my class for three years.
  4. I've sent eight messages since breakfast.
  5. We haven't had wi-fi since 9.00 a.m.
  6. I haven't uploaded any new videos for weeks.
  7. Mum has been a web developer since 2008.
  8. Ava hasn't changed her profile picture for months.