Answer:
I am a cave full of bones and the house of a worm.
I am in the past, never in the future. I don't exist, but have existed. I saw what you saw, and this is what I will ever see. What am I?
I am merry creature in pleasant time of year as in but certain seasons I sing that you can hear; And yet I'm made a by-word A very perfect mock; Compared to foolish persons And silliest of all folk.
I mirror your actions.
Break me and I am better, immediately set and harder to be broken again. What am I?
A little house full of meat, no door to go in and eat.