我爷爷虽然年纪大了，但精神依然很好。

My ___old grandfather is still in good spirits.

我奶奶喜欢穿她的旧衣服。

My grandmother likes to wear her ___old clothes.

她经常提到她在旧公司的美好回忆。

She often talks about her happy memories at her ___old company.

嘿，老伙计，最近过得怎么样？

Hey, ___old buddy, how have you been?