How to say “The survey reports that 70 of the 120 families who answered want a reading room, but it doesn't tell us what the students want.” in Japanese
In Japanese
調査によると、回答した120家庭のうち70家庭が読書室を希望していますが、生徒の希望はわかりません。
Chōsa ni yoru to, kaitō shita hyakunijū katei no uchi nanajū katei ga dokushoshitsu o kibō shite imasu ga, seito no kibō wa wakarimasen.