小鸟在树上甜美地歌唱。

The bird sang ___sweetly in the tree.

蜂蜜在茶中融化后，饮料尝起来甜滋滋的。

The drink tasted ___sweet after the honey dissolved in the tea.

小女孩对着她的小狗甜甜地笑了笑。

The little girl smiled ___sweetly at her puppy.