爷爷经常给我们讲他年轻时的冒险故事。

Grandpa often tells us adventurous ___stories about his youth.

别相信他说的那些话，都是编造的故事。

Don't believe what he says, they're all made-up ___stories.

这座公寓楼有15层。

This apartment building has 15 ___stories.