Definition: a wild animal of the dog family Level: B2
狼以群体狩猎，称为狼群。
___Wolves hunt in groups known as packs.
我们能听到狼在远处嚎叫。
We could hear ___wolves howling in the distance.
我们还没反应过来，尼克就扑到了狼身上，它们开始打斗。
Before we knew it, Nick leapt onto the ___wolf and they started to fight.
