父(ちち) chichiは wa家(か)族(ぞく) kazokuの no居(い)間(ま) imaを o広(ひろ)く() hirokuした shita。 My father made the family living room bigger. Literal Father [topic-は] family's living-room [object-を] wide made. 広くする means 'to make wide/spacious' — the i-adjective 広い in its く-form + する. This is the transitive counterpart of 広くなる ('become spacious'). 居間 is the Japanese word for 'living room.' homefamily~くする (make [adjective])
父(ちち) chichiは wa家(か)族(ぞく) kazokuの no居(い)間(ま) imaを o広(ひろ)く() hirokuした shita。 My father made the family living room bigger. Literal Father [topic-は] family's living-room [object-を] wide made. 広くする means 'to make wide/spacious' — the i-adjective 広い in its く-form + する. This is the transitive counterpart of 広くなる ('become spacious'). 居間 is the Japanese word for 'living room.' homefamily~くする (make [adjective])