炸弹在市场爆炸，造成三人死亡。

A bomb ___went ___off in the marketplace, killing three people.

上周炸弹在地铁站爆炸，完全摧毁了地铁站，导致无法使用。

The bomb ___went ___off in a subway last week, it's completely destroyed so you can't use it.

在训练演习中，枪意外走火。

The gun ___went ___off accidentally during the training exercise.