她将祖母的戒指珍藏在丝绒盒子里，生怕弄丢了。

She kept her grandmother's ring ___preciously in a velvet box, fearing she might lose it.

她小心翼翼地摆放瓷器，仿佛它们是无价之宝。

She arranged the china ___preciously, treating each piece like a priceless treasure.