1.   Children, many suffering from malnutrition, keep warm by doing exercises fully clothed.

2.   Drain, reserving any liquid, and keep warm in a heated serving dish until the sauce is made.

3.   He could even remember the time he picked out six yellow goslings from a box kept warm by a light bulb.

4.   He stamped his feet in an attempt to keep warm.

5.   He was jumping up and down in a hopeless attempt to keep warm.

6.   I jumped up and down in a futile attempt to keep warm.

7.   If cooking in batches, keep warm until all quail are cooked.

8.   It was great for about an hour or so and then the effort of keeping warm began to take its toll.

9.   Keep warm.