我的奶奶虽然已经85岁了，但她仍然喜欢每天散步。

My grandmother is in her ___mid-eighties, but she still enjoys taking walks every day.

这种音乐风格在八十年代中期非常流行。

This music style was extremely popular in the ___mid-eighties.

今天的温度预计会达到华氏85度左右。

Today's temperature is expected to reach the ___mid-eighties.