父亲温柔地把婴儿放在膝上轻轻颠着逗乐。

The father gently ___dandled the baby on his knee to make her laugh.

奶奶很喜欢逗小孙子开心，总是给他买各种零食和玩具。

Grandma loves to ___dandle her grandson by buying him snacks and toys all the time.