1. The cod swim away; the ice sheets freeze over again.

2. In short, pigs can fly and hell really can freeze over.

3. A single night's cold was enough to freeze over the pond.

4. The children wanted the lake to freeze over so they could ice - skate.

5. Many mountain lakes freeze over during winter and are used for curling, horse and dog racing, particularly around St. Moritz.

6. They don't know about cold so intense that rivers freeze over so you can drive a horse and cart across them.