11.   Dark clouds warned of the approaching storm.

12.   Dark heavy clouds were crawling across the sky, blotting out the stars.

13.   It grows to be a small dark cloud of purpose, opaque with life.

14.   It was like a dark foreboding cloud that settled on every aspect of my personality.

15.   Parents should avoid hanging a dark cloud by communicating that life is dangerous and that failure is imminent.

16.   Sadly, when I was there war was not the only dark cloud looming on the horizon.

17.   The dark clouds of red ink and layoffs at Apple Computer INC. May contain a silver lining for consumers.

18.   The sun was up, the dark clouds disappeared and for a moment she breathed easy.

19.   There were dark clouds in the sky.

20.   There were ominous dark clouds gathering overhead now and a chill wind.