柠檬汁会使牛奶凝结成块。

Lemon juice can ___curdle milk into lumps.

酸奶放太久了，已经开始结块。

The yogurt has been left too long and has started to ___curdle.

那个恐怖故事让我毛骨悚然。

That horror story made my skin ___crawl.