Setze die Signalwörter des Present Perfect Progressive ein.

1 How long have you been playing football?
2 She has been waiting here for hours.
3 They have been learning French since 2005.
4 She has been speaking on the phone for hours.
5 He has been digging the garden all morning.
6 The family has been looking for the hotel for 20 minutes.
7 I have been reading this book since Christmas.
8 How long have we been sitting here?
9 Jake has been living in London since he was a child.
10 The dog has been barking all night.