Using of Modal verbs: should/ought to and shouldn’t

Choose what is right : should’ or ‘shouldn’t ’ and complete the sentences.

1. It’s getting late. -Yes, we … go back before it gets too dark to see.

2.You … do things to hurt other people. Yes, sometimes I … think first.

3.… we buy the tickets the day before the concert? Yes, we … . We … wait until the last minute.

4.You … spend all your free time playing computer games.  I know I … . But I am crazy about them.

5. Parking near schools … be allowed.  I agree. But where … teachers and parents park then?

6. If you have a temperature, you … stay in bed.  Yes. The doctor says that I … go to school before Monday.