11.   Idiotically, her heart was racing when she reached the drawing-room.

12.   Her heart was racing before she pulled the door open.

13.   Heart racing, she felt for the dangling cord and flooded the room with light just as the door closed quietly.

14.   Every time a train went by, my heart raced at the thought that another aftershock might be rattling the city.

15.   He said his son sometimes had spells in which his heart would race, but was told by doctors he was in no danger playing sports.

16.   Her heart raced.

17.   He shakes uncontrollably, and his heart is racing.

18.   His heart raced, his breathing was shallow, but he did not die.

19.   His heart was racing.

20.   Johnson said his heart would race when he chewed, but the buzz and the addiction to nicotine kept him from quitting.