He opened his eyes and managed a very small grin.

Tom tried to smile, to look happy, and finally managed a weak grin.

He managed a grin, trying to ease the impact of the depressing news.

He caught himself, turned back to her, and managed a rueful grin.

Rex managed half a grin, but he really didn't have anything to smile about.

George shook himself out of his torpor, and even managed a grin.

The Warrior managed a grin and looked down at his feet.

His mouth full of pizza, Harry still managed a grin.

Then he suddenly took a deep breath and managed a weak grin.

He saw me looking at him and managed a strained grin.