Odpowiedź:
Richard went to home on foot because he was on the wrong bus. I think he felt tired 'cause he had to go home on foot form completly another part of town. It must have been along distance so it took a lot of time. He felt silly because he got on a wrong bus and he didn't know that he is on the wrong one.
Wyjaśnienie:
Myślę, że jest okej ewentualnie możesz sobie pozmieniać;)