I have some questions which are confusing for me.
1. Sarah took one look at the rabbit and immediately identified it as belonging to her friend, Cathy Blake, who lived next door but one.
quest. what does "who lived next door but one" mean?
2.teenagers sat cross-legged in circles, chatting and telling each other jokes. And still, in their hundreds, more young people continued to make their way up the mountain to stare at the brightly shining moon.
quest. what does "in their hundreds" mean?
3.happiness runs in the families-is it an idiom?
thanks in advance
- Cathy Blake had a rabbit.
- Cathy Blake lived two doors down from Sarah.
- Sarah identified Cathy's rabbit.
Definition from Cambridge Dictionary Online: Free English Dictionary and Thesaurus