They can work hard to achieve the goal or do the action. Some people may in this way if they are under great deals of stress. They may lash out on people around them. By how they act to a subject.
Answer:
The last / right option - "Snow falls off roofs with slopes"
Explanation:
I do not have the reading, but this answer makes the most sense. Since there is a slope, the snow can fall down because the force of gravity is pulling on it, and since it is not laying on a plane / flat roof, it can fall off.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
