1.  A fourth group will receive a placebo and standard medical care.

2.  Voices raised with excitement came from a fourth group, clustered round the sink in the corner of the room.

3.  And the fourth group toiled by itself over a worksheet that coached them for a coming statewide test.

4.  A fourth group took neither.

5.  A fourth group, the Ocainas, also appear in town occasionally but prefer to live in isolation.

6.  A fourth group received a placebo, or dummy pill.

7.  A fourth carrier group left Japan Friday for an undisclosed location.

8.  A fourth group took a placebo.

9.  A fourth group, the Brothertown Indians, has also joined the existing suit.

10.  Chinese will be the fourth largest group.