1.   She keeps the smile on her lips.

2.   She managed to keep the smile on her face.

3.   She managed to keep her smile in place too as she walked into the thickly carpeted room and closed the door behind her.

4.   Unable to keep a smile of pure pleasure from her lips, she glanced at the man at her side.

5.   But if you do and you get stuck, try to keep a smile on your face.

6.   He seemed to be struggling to keep a smile off his face.

7.   Mrs. Leiber keeps her smile.

8.   The return of McReynolds as crew chief pleased Skinner so much that he could barely keep a smile off his face all day.

9.   The score is equally entrancing, and the humor is droll and decidedly British, keeping a smile on your face throughout.