Read the prompts. Then write predictions using the future continuous or future perfect and a suitable time expression. Start with I think... or I don't think....
1. scientists / find a cure for most diseases I think / don't think scientists will have found a cure for most diseases by the end of the century.
2. most people / live to 200
3. new diseases / appear
4. a human / run 100 m in five seconds
5. computers / manage all major companies
6. the Earth / fight wars against other planets