游击队对敌方基地发动了几次突袭。

The guerrillas launched several ___raids on the enemy base.

警方昨晚突袭了该地区，查获了大量非法武器。

The police conducted surprise ___raids last night and seized a large number of illegal weapons.

警方对毒品窝点进行了突然袭击。

The police conducted surprise ___raids on suspected drug dens.