He has been living here ... fifteen years.
c for
Peter was watching a documentary when the phone ... .
b rang
I went to Berlin two years ... .
c ago
We bought some crayons from the ... shop
b stationery
Bob argued ... his brother over the football match.
c with
We ... take photos in the museum. It's not allowed.
a mustn't
If you wake up early, you ... late for work.
c won't be
You ... all night. You must be exhausted.
a 've studied