使用一张单独的纸。

Use a ___separate sheet of paper.

艺术系和音乐学校在两栋分开的楼里。

The art department and the music school are in two ___separate buildings.

昨天我买了很多礼物，所以我需要一个单独的行李箱。

Yesterday I bought a lot [of] presents, so I needed a ___separate suitcase.