16.1
2 They have been playing football.
3 I have been looking forward to it.
4 She has been dreaming.
5 He has been watching a film.
16.2
2. I had been waiting for 20 minutes when I realised I was in the wrong
restaurant.
3 At the time the factory closed down, Sarah
had been working there for five years.
4 The orchestra had been playing for about
ten minutes when a man in the audlence suddenly started shouting.
5. I had been walking along the road for about fifteen minutes when I heard
somebody calling me.