Question

Why do we sleep? From birth, we (spend) a third of our lives asleep but scientists srill (not/know) exacly why. Why (humans/have) problems sleeping? In modern society, many people (not/get) the recommended seven or eight hours a night. We (work) long hours and we rarely (go) to bed at sunset. Why (we/sleep) differently? It (depend) on the time of year and also our age. Teenagers always (need) more sleep than adults. Lots of elderly people (not/sleep) longer than four or five hours, but they often (take) naps during the day.

Answer 1

Ответ:

1. spend

2. don't know

3. do humans have

4. don't get

5. work

6. go

7. do we sleep

8. depends

9. need

10. don't sleep

11. take

Объяснение:

Весь текст в Present Simple