1. Probably the first Indian and Eskimo —- in America came across the Bering Strait when the sea was frozen solid.

2. Films with a great deal of violence in them are not —- for young children.

3. In Austria, freshwater lakes and rivers are —- frozen for most of the winter.

4. Humans developed the way they did because they had to run long distances in order to —-.

5. People who think they are overweight try to —- the problem by giving up various foods.