Knowledge of what school subjects will be useful in your future life? explain your ideas ( write 7-10 sentences)

Ithink that knowledge of mathematics and physics will be useful in my future life. mainly because science is widespread today and people, who have knowledge in such kind of things, always have a job. also, it is quite interesting and profitable. i mean there many ways in which you may advance this knowledge, like in informational technologies or whatever. in my opinion, it is great to have knowledge in these sphere, because you can do whatever you want. you can become an engineer or a programmer, you have an ability to make money and prosper. it sounds nice, doesn't it?

1. if the food is    good, we’ll come here again.

2. what will you do if ann does not    pay?

3. when i arrive, i will  phone you.

4. will  you help me if i have а problem?

5. before you go, leave my key on the table.

6. if you do not pay, you’ll get into trouble.

7. as soon as linda arrives, call me.

8. what will  you say    if peter asks?

9. if you don’t go away, i will call    the police!

10. i will  not wait if he is late again.

11. if he misses the last train, he’ll spend the night in а hotel.

12. what will you do if the weather is  bad on holiday?

13. if i stay here, i will not be  happy.

14. if i am  unhappy, i won’t work hard.

15. she’ll have some german lessons before she goes to berlin.

16. if peter rings, tell him i will never see him again.

17. he will be    happy if he wins his next match.

18. she won’t be able to go until she  feels much better.

19. if the bus do not come    soon, i’ll be late for school.

20. i want to speak to him before he goes  out.