Strange to say, all the lights in the house were on, though no one was at home.
火は家中に広がった。
The fire spread throughout the house.
家中どこでも自由にはいれた。
The dog had the liberty of the entire house.
その手紙を家中探した。
I looked all over the house for that letter.
甥っ子と姪っ子が遊びに来たのはいいが、朝から晩までどたばたと家中を走り回り、うるさくて仕方がない。
It's great that my nephew and niece came over to play, but they're so annoying making such a racket running all over the house all day that I can't stand it.