Fill in:

1. Dan was sweating heavily because of the ... . 2. I stepped over the pieces of brick and other ... that was lying on the floor of the ... building. 3. The city was completely empty. It had been ... by its inhabitants a long time before. 4. Jack squeezed himself through a ... in the rock. 5. Polly ... the swimming pool as soon as she got back to the hotel. 6. Tom ... himself from the freezing wind behind the wall.