他坐在公园的长椅上，沉思着未来的计划。

He sat on the park bench, ___contemplating his future plans.

她正在考虑明年搬到另一个城市居住。

She is ___contemplating moving to another city next year.

她坐在公园长椅上，静静地凝视着湖面。

She sat on the park bench, ___contemplating the lake quietly.