His shrewd eyes surveyed the room as he did so.

Their range is good, but you need a shrewd eye.

He just watched her for a moment with shrewd, green eyes.

He had an attractive voice and a very shrewd eye.

He paused in his work to look her over with shrewd eyes.

His voice was light, but the shrewd eyes were again watching Paul closely.

Actually, his shrewd eyes were watching the reflection of the room behind him.

The shrewd eyes were watching him; he had never noticed them before.

I felt her shrewd eyes looking me up and down.

He had not looked into those cold, shrewd eyes since the end of the summer.