他温柔地瞥了一眼熟睡的女儿。

He cast a ___tender glance at his sleeping daughter.

母亲温柔的表情让孩子安心。

The mother's ___tender expression reassured the child.

她安慰悲伤的朋友时，声音柔和而温柔。

Her voice was soft and ___tender as she comforted the grieving friend.