He had been working on an important piece of research.

But, he said, the card was not an important piece of evidence.

My husband considered the program the single most important piece of work that he did.

Often, the most important piece of information is that something has gone wrong.

In its day it was considered an important piece of work.

The most important piece took a while, but finally, he got it.

But other important pieces of evidence have long been lost as well.

I think George may well have told them that we had done this important piece of work.

I feel like an important piece of the team now.

But she had held back one important piece of information.