21.   Billy coughed when the door was opened, and when he coughed he shit thin gruel.

22.   But here, when they knocked, the door was opened wide and a cheerful voice bade them enter.

23.   Can you back up a few steps so that I can open the door?

24.   Could you open the door for me?

25.   Dann opened the door himself, looking warm and sticky in a pink short-sleeved shirt and bright green slacks.

26.   Douglas burst open the door into the first, where somebody had lit a lamp.

27.   Even my highly regrettable tendency to react positively whenever the fridge door is opened was proof against that.

28.   Every time someone opens that door, it makes a terrible creaking sound.

29.   Ezra opened the door and slipped through.