>inの後にthe houseなどが省略されている これは違います。その in は「中に」という意味の副詞です。 目的語が代名詞の場合は、その目的語を必ず副詞の前に置きます。 I took them in ○ I took it in ○ I took in them × I took in it × 目的語が短い普通名詞(句)の場合は、どちらでもよいです。 I took in the laundry. ○ I took in the washing. ○ I took the laundry in. ○ I took the washing in. ○ 目的語が長い場合は、副詞を先に書きます。 I took in the laundry that I had hung out yesterday. ○ I took the laundry that I had hung out yest