旗帜在晨风中轻轻飘动。

The flags ___wave gently in the morning breeze.

那个孩子看到冰淇淋车时，兴奋地挥舞着双手。

The child ___waved her hands in excitement when she saw the ice cream van.

站在悬崖上，他可以看到长长的草在风中像绿色的海洋一样起伏波动。

Standing on the cliff, he could see the long grass ___wave in the wind like a green sea.