11.   During a rash of unforced errors in the second set, her expression never changed.

12.   Her expression never changes.

13.   His expression changed as reality hit.

14.   Occasionally, he glances from a page to the man, but his expression never changes from a little sneer.

15.   Or a facial expression will suddenly change.

16.   The blank facial expression seldom changes.

17.   The expressions do not change much even after he repeats the poem in English, his Yorkshire accent softly shaping the phrases.

18.   Their expression never changes.

19.   Walking off the field, his expression never changed while he politely thanked the rabble.

20.   The expression rarely changes, and neither does the game.