Soluzione del esercizio 4 di Performer B1, Vol. 2

Esercizi svolti per il libro Performer B1, Vol. 2

Soluzione

  1. Because he has just had a great lesson.
  2. In this lesson students had to work out how ecoguilty they are.
  3. It’s the amount of carbon dioxide emissions each of us produces.
  4. The situation would definitely begin to change.
  5. It’s creating energy from burning organic material.
  6. We should encourage each other to reduce our carbon emissions with alternative energy sources