爷爷奶奶常常坐在阳台上，回忆他们年轻时的故事。

Grandparents often sit on the balcony, ___reminiscing about their youth.

爷爷奶奶喜欢坐在阳台上，一边喝茶一边回忆年轻时的故事。

The grandparents enjoy sitting on the balcony, drinking tea while ___reminiscing about their youth.

爷爷奶奶喜欢坐在院子里，一边喝茶一边回忆往事。

Grandma and grandpa love sitting in the yard, drinking tea and ___reminiscing about old times.