How to say “Who's covering the administrative office on Saturday? Nobody else knows where the old case files are kept.” in Japanese
In Japanese
土曜日は事務室にだれが入るの?古い書類がどこにあるか、ほかにだれも知らないんだよ。
Doyōbi wa jimushitsu ni dare ga hairu no? Furui shorui ga doko ni aru ka, hoka ni dare mo shiranai n da yo.