1.   The class had barely started when the fire bell rang.

2.   And then the fire bell rang.

3.   Cash registers will start ringing like fire bells.

4.   Greenspan is a fire bell against raging inflation.

5.   There goes the fire bell!

6.   Wednesday evening, the Americans will spot the Mexicans, and the Tricolores will spot the Yanks, and the fire bells will go off.