You could tell by his face, which seemed to have stopped trying.

Unfortunately, of course, she could probably tell by his face that it wasn't.

She could tell by his face that he hurt too much to speak.

I can tell by his face that he has not been successful.

I can tell by your face you don't live in the weather.

He could tell by her face that something was wrong.

I could tell by Tom's face how bad it must have been.

I could tell by his face that there had been more than just a few complaints.

You could tell by her face how happy she was to see us.

I could tell by his face that he liked her.