1.   He made a clicking sound with his tongue on the roof of his mouth.

2.   Instantly, the metal container began to emit a clicking sound.

3.   The unique character of the clicking sounds in their language has persuaded some researchers that the Khoisan people are directly descended from the most primitive human ancestors.

4.   The typewriter made a clicking sound and then ran towards the space station.

5.   At another home, Cook discovered mud tubes running between the wall and the back of a refrigerator after hearing the clicking sound of the insects.

6.   A clicking sound.

7.   But the clicking sounds held his interest.

8.   Clicking sounds and strange noises led Mark and Shannon to believe that their phone was tapped.

9.   Eventually they came up with Lego-like blocks that seemed to make an appealing clicking sound when you pulled them apart or pushed them together.

10.   Helen Zille practiced the clicking sounds of the local Xhosa language, her tongue dancing as the words tumbled from her lips.