3 942119.4411958.1 Read the extract and complete the sentences. 7 The Professor thought there was light in the cave because of 2 While walking on the beach, Axel found shells and 3 Hans threw his pickaxe into the water to see ... 4 Hans said the marks on his pickaxe were made by
the heat of these rocks
2. bones
3. how deep the sea was
4. teeth