他开心地咔嚓咔嚓嚼着脆饼干。

He happily ___crunched on the crispy crackers.

吃薯片时发出的脆响让他很有满足感。

The satisfying ___crunch of potato chips made him happy.

孩子们喜欢把这种脆脆的麦片当作零食吃。

Kids enjoy eating this ___crunch cereal as a snack.