1.   Billy crouched in front of the fire to warm his hands.

2.   He paused by one of the radiators to warm his hands before approaching the doors that led into the infirmary.

3.   She lit the gas and filled the kettle, then warmed her hands over the lid while the water boiled.

4.   We warmed our hands as though a sudden chill had come upon us at the mention of his name.

5.   They gathered round the fire to warm their hands.

6.   She went to warm her hands by the log fire.

7.   He warmed his hands in front of the fire.

8.   We warmed our hands over the fire.

9.   The three of the family warmed their hands.

10.   He was sitting in the armchair to one side of the fire, still warming his hands.