You never know how people are going to react to it.

A really great guy is not going to react with anything but understanding.

We weren't sure how people were going to react to the news.

You don't know how each person is going to react.

The poor man obviously had no idea how the woman was going to react.

What makes you think that other countries aren't going to react the same way?

If someone's done half your work for you you're going to react in a different way.

Good God, how were they going to react to this?

He couldn't imagine how his mother was going to react to this news.

I really don't know how you are going to react.