完形填空。阅读下面短文，从短文后个题所给的四个选项（A、B、C、D）中，选出可以填入空白处的最佳选项。
Two wardmates shared the same ward in a hospital. They were seriously ill, but they never lost hope. One man was allowed to sit up in his bed for an hour each afternoon to help drain the fluid from his lungs. His bed was next to the room’s only 1 . The other man had to spend all his time flat on his 2 .
