B1
a very long time
Dictionary examples:
I've been trying to grow a beard for ages, but I only have three hairs! (0.0)
I've been trying to open this jar for ages. It must be superglued shut! (0.0)
I've been waiting for my coffee to cool for ages. It must be lava! (0.0)
I've been waiting here for ages. (15.2)