If Tom is actually going to his friends' houses, he calls on them.
He cycles to his friends' houses.
Why does he have a bag of coins?
Bicycles don't normally break down. The chain comes off or snaps, they get a puncture, the brakes seize up, or something else specific happens.
He left the coins in front of his friend's door. This seems a strange thing to do.
Student or Learner