她把自己锁在卧室里。

She ___locked herself ___in her bedroom.

我母亲痛苦得快要死了，而我父亲正试图找到一种方法把我锁起来。

My mother was about to die from her agony while my father was trying to find a way to ___lock me ___in.

守卫把囚犯锁在牢房里。

The guard ___locked the prisoner ___in the cell.