“我经过她的房间时,听到她在唱歌”英语怎么说?特别是经过怎么译

When I passed by her room,
heard her singing

I heard she was sining when I went by / passed her room.

When I walked past her room,I heared her singing

When I walked past her room, I heard her singing.

When I passed her room,I heard her singing.
When I went by her room,I heard her singing.

I heard her singing when I passed by her room.