他往花瓶里加了点水让花保持新鲜。

He ___freshens the flowers by adding some water to the vase.

她换了新窗帘，让整个房间焕然一新。

She changed the curtains to ___freshen up the whole room.

随着太阳升起，清晨的空气变得清新起来。

The morning air ___freshens as the sun rises.

她往鸡尾酒里加了些苏打水，让它更新鲜。

She ___freshens her cocktail by adding a splash of soda.