我喜欢在热面包上涂黄油。

I love spreading ___butter on warm bread.

早餐时她喜欢在吐司上涂黄油。

She likes to ___butter her toast for breakfast.

他总是用甜言蜜语巴结老板，希望能升职。

He always tries to ___butter up the boss with sweet talk, hoping for a promotion.