upset by something
upset about something
upset at something

I was very upset at the time and not thinking clearly.

"He gets upset at times on the court, but it's working out pretty well."

Matt wondered why she should be so upset at the news.

Yet still I see people getting upset at the death of even one child.

He is very upset at all the people coming here.

He is most upset at the whole business, I can tell you.

"I was so upset at myself for not having switched earlier."

Some become upset at the sound of a crying child.

Henry is very upset at the notion of his team being broken up.

But she didn't seem upset or mad at him, so that was good.

Sometimes, to do things right, you have to upset a lot of folk at first.

Realpolitick may upset many people, but often a necessity at a moment in time.

"But I don't see why he has to upset me at a time like this."

"Now what could upset me at such a lovely time and place?"

He was also upset by the ugly racial climate in Chicago at the time.

Joe states that this is not the case, completely upsetting the mood at the dinner table.

This would upset her at the best of times.

But you see now what upset me at this particular party.

There was some concern that he was upset enough at her not to come in.

It had upset him at the time, but you had to get over stuff like that or you'd go to the wall.