Помогите пожалуйста задание 35

Chemicals and cleaning products are very toxic. We must keep these products at locked cupboard.
Cupboards and drawers should be safety catches on.
In swimming pools children can drown, so we have to set the Guard rales
Staircases are very dangerous , because children fall down , that why we should set on  safety gates 
Knives can cut , keep out of reach of children