1.   Aside from the screams for help, witnesses said, the room fell eerily quiet.

2.   After an agonizing three hours, a series of shadows interrupted the regular pattern of the sonar scan, and the busy room fell quiet.

3.   He is not a boaster or a braggart but when he clears his throat, the room falls silent.

4.   Only then did the room fall silent.

5.   The crowded press room fell into a hush.

6.   The interview room fell silent.

7.   The room falls quiet.

8.   The room fell absolutely silent.

9.   The room fell silent, in a soothing, companionable way.

10.   The room falls silent, then explodes in applause.