Вопрос по should Помогите!!!

1  It's getting late.
Yes, we should go back before it gets too dark to see.
2 You shouldn't do things to hurt other people.
Yes, sometimes I should think first.
3. Should we buy the tickets the day before the concert?
Yes, we should. We shouldn't wait until the last minute.
4 You have everything you need. It shouldn't be too hard to do your homework.
Yes, I should start today.
5 You shouldn't spend all your free time playing computer games.
I know, I shouldn't. But I am crazy about them.
6 If you have a temperature, you should stay in bed.
Yes. The doctor says that I shouldn't go to school before Monday.
7 Parking near schools shouldn't be allowed.
I agree. But where should teacher and parents park then?
8 Why should I walk if we have three cars?
You should walk as much as possible. It's good for you.

   

1. should.
2.shouldn't, should
3. should, should, shouldn't
4.shouldn't should.
5. shouldn't, shouldn't
6. shouldn't, shouldn't
7. shouldn't, should
8. should, should.