家中どこでも自由にはいれた。
Iejū dokodemo jiyū ni haireta.
The dog had the liberty of the entire house.
自由 (jiyū: freedom, liberty) oneself + to originate in
皆留守だというのに、不思議なことに家中の電灯がついていた。
Mina rusu da to iu no ni, fushigina koto ni iejū no dentō ga tsuite ita.
Strange to say, all the lights in the house were on, though no one was at home.
皆 (mina: everyone)
留守 (rusu: absence, being away from home) to stay + to protect
不思議 (fushigi: strange, mysterious) not + to think + to discuss
電灯 (dentō: electric lights) electric + lamp
