Complete the sentences using the given verbs

exercise — should

You should exercise three times a week.

1. to book — had better

                We  [ ] our flight tickets in advance.
   

2. to be more to — ought

                The taxi driver  [ ] more polite to his passangers.
   

3. to pass — shouldn't

                You  [ ] the street when the light is red.
   

4. to leave — ought not

                Antony  [ ] the children alone at home.
   

5. to take — better not

                You  [ ] grandmother's car without her permission.