放学后我们经常去操场打球。

After school, we often go ___playing ball on the playground.

自从他的新专辑销量突破白金后，他就开始挥霍无度，买豪车和私人飞机。

After his new album went platinum, he started ___balling with expensive cars and private jets.

她正在揉面团准备做饼干。

She is ___rolling the dough to prepare for making cookies.