他在面包上涂了一层厚厚的黄油。

He ___coated the bread with a thick layer of butter.

这些糖果外面裹了一层巧克力。

These candies are ___coated with a layer of chocolate.

这些药片是糖衣的，更容易吞咽。

These pills are ___coated with sugar to make them easier to swallow.