1. that man did not wear helmet. it's dangerous.
(he should be wearing helmet)
2. the speed limit is 50mph but my daddy is driving too fast
3. my friend says she will come to my house at 800 a.m and now it's 740am
With the sentences using should or should not.it can be in present or past situations. number one has been done for you.
2. He should slow down the car.
3. They should hurry up.