be sad about something

Many said they were also sad about the jobs that would be lost.

There was something sad about the way the man moved.

I feel sad about this, as though I've lost something.

Sure, we're sad about many things going on in the world.

That is why I am a bit sad about some of the new changes.

Couldn't she be sad about something, and still look that way?

She thought he was dead, she'd even been quite sad about it for a while.

It was the best opportunity, though I'm sad indeed about the cause.

Not sure why, but I feel a bit sad about this one.

However, this is also a day for feeling sad about all the things that are still not as they should be.