0 used to show an exact position or particular place: --
1 used to show an exact or a particular time: --
2 in the direction of: --
3 used to show the cause of something, especially a feeling: --
4 used to show the activity in which someone's ability is being judged: --
I was never very good at sports.
He's very good at getting on with people.
She's hopeless at organizing things.
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Можем да го завършим стъпка по стъпка, колкото и дълъг да е пътят и не може да бъде завършен, колкото и кратък да е пътят, ако дори не маркирате отпечатъка си.