Упр.15 Unit 3 ГДЗ Enjoy English 10 класс

Work in pairs. Discuss the statements. Use different modal verbs to say how certain you are about them. Then give your reasons.

1. People lived in the Arctic territories in prehistoric times.
2. The pyramids in Egypt were built by aliens.
3. Humans evolved from apes.
4. In the past there was only one continent on Earth.
5. …your own idea.

Possible answers:

1. People lived in the Arctic territories in prehistoric times. — They must have lived there, because archaeologists have found traces of ancient settlements.
2. The pyramids in Egypt were built by aliens. — They can’t have been built by aliens. People built them using their knowledge and hard work.
3. Humans evolved from apes. — Humans may have evolved from ape-like ancestors. Scientists support this theory.
4. In the past there was only one continent on Earth. — There might have been one continent long ago, according to the theory of continental drift.
5. My own idea: Dinosaurs became extinct because of a huge meteorite. — This could have happened after a giant meteorite hit the Earth.