During the tourist season, there are many people wandering in this city to see the old castles_____ in the sixteenth century.
31. We are waiting ______ for your absence.
30. With little knowledge about the area he succeeded ______ many researchers failed.
29. A very beautiful scene spreads in front of the mountain, at the foot of which ______.
28. What was unexpected was that the disrespectable fellow ______ the old man.
27. I wonder whether the police ______ that lost child or not