1.   At last I stumble off the path into complete darkness.

2.   Colour films must be developed in complete darkness.

3.   He heard their crashing, giggling descent, swinging his beam away from them so they would be in complete darkness.

4.   In a matter of minutes there was complete darkness.

5.   In complete darkness, the circadian clock still continues to tick vigorously.

6.   Many species will, in complete darkness, utter a few snatches of song if disturbed at their roosts.

7.   So complete darkness can cause panic.

8.   The lights mysteriously failed, and we stumbled around in complete darkness.

9.   The room was left in complete darkness.