At that moment the music started so we couldn't hear the boy's reaction.

Once again, it would have been revelatory to hear his reaction.

Polly was waiting to hear his reaction to the letter.

Somewhere in the background I can hear my aunt's reaction to this confession.

Pike raised up to see for himself just as he heard Cole's reaction.

"I'm eager to hear your reaction, since he's gaining such a strong following."

She was leaning forward intently, curious to hear my reaction to what she'd said.

"I was in the bathroom waiting to hear the crowd's reaction."

I agree with you, but I should have liked to hear your reaction.

She wanted to hear his reaction, he could tell.