4. Diet

5. Health

6. Population growth

7. Space travel

8. Traffic

9. Vacations

11. Future progressive Use 1) An action will be in progress at a certain time in the future. This action has begun before the certain time. 2) Something happens because it normally happens. Form will + be + infinitive + ing Examples 1) When I come to school, the other kids will be waiting for me. 2) We'll be going to the disco on Saturday.

12. Future Perfect USE 1 Completed Action Before Something in the Future The Future Perfect expresses the idea that something will occur before another action in the future. It can also show that something will happen before a specific time in the future. FORM: will + have+ past participle. Examples: By next November, I will have received my promotion. Will she have learned enough Chinese to communicate before she moves to Beijing? By the time I finish this course, I will have taken ten tests.