11.   The first bomb exploded with a blinding crack that swayed the truck on its springs.

12.   The first bomb exploded with a blinding flash.

13.   We listened to the announcer with shock and disbelief -- another bomb had exploded in the city.

14.   When the bomb exploded it left a huge crater in the ground.

15.   When the bomb exploded, there was bedlam.

16.   At that moment the bomb exploded, showering people with glass and debris.

17.   The bomb exploded without any prior warning.

18.   Fortunately the house was empty when the bomb exploded.

19.   A bomb exploded at an army recruiting office.

20.   A bomb exploded in a hotel, killing six people and wounding another five.