1.   It is like putting together a three-dimensional jigsaw puzzle with missing pieces.

2.   We found the missing piece of the jigsaw under the chair.

3.   Among the reopened but pending cases are some that will, when resolved, fill in other missing pieces in our civil rights history.

4.   Analysts admit that the Healtheon deal has handed WebMD a multibillion currency that can perhaps buy the missing pieces.

5.   And they have to be hoping that he may turn out to be the missing piece of a puzzle that left them one victory short of a world championship.

6.   A crucial missing piece in all models of solar system formation is the exact composition of the solar nebula, researchers said.

7.   A physical defenseman would be the missing piece to a Stanley Cup.

8.   Building a working centromere was the missing piece.

9.   But now there will be a missing piece in the puzzle in the northern corner -- not a big one but a disturbing blank space all the same.