她在两件裙子之间犹豫不决地来回挑选。

She kept ___wavering between the two dresses, unable to decide.

微风轻拂，窗帘轻轻飘动。

The breeze made the curtains ___flutter gently.

我们在公园用镂空的塑料球玩接球游戏。

We played catch with a hollow ___wiffle ball in the park.