определите какие черты были характерныдля земского движения конца 70-х гг

Пищеварительная система амфибий, очень кратко!

Помогите очень нужно ...заранее большое спасибо:***** 

поставьте глаголы ,данные в скобках ,в нужном времени

1) He (not/see) me as he (read) when I (come) into the room.

2) When he (be) in York he (visit) the places where he (play) as a boy.

3) The telegram (arrive) five minutes after you (leave) the house/

4) It (rain) hard last night when I (leave) the office.

5) The train couldn't stop because it (travel) too fast at the time

6) When I (come) to see my friend, his sister (tell) me that he (leave) half an hour before.

7) I (shout) to him to stop, but he (not/hear) me.

8) When I (hear) the news, I (hurry) to see him.

9) He (walk) to the station when it (start/rain).

10) He (sit) in the garden when the storm (break out).

11) He (thank) me for what I (do) for him.

12) The manager (leave) the office before I (arrive).

13) When I (go) to the office the next day, I (find) the books exactly where I (leave) them.

14) We (walk) for about two hours when at last we (see) the lake.

15) They (drive) at about forty miles per hour when the accident (happen.) 

Прошу помогите решить пожалуйста. Задание есть во вложениях.

Найти наибольшее и наименьшее значение функции на заданном промежутке:
[tex]f(x)=\frac{x^3}{3}-\frac{3x^2}{2}+2x[/tex]
x∈[0;3]