<span>The answer to your question is past progressive
</span>
I think its an Idiom. I don't see like or as. So no simile. I don't see he is something like a marshmallow. - No metaphor. I also don't see a non-human thing doing human things- the grass was dancing in the wind. My answer would be an idiom.
Hope this helps!
2- We need to be at the bus stop by 758 or well be late
3- Prefix
4- Suffix
5- (your name first and last)
Jiiijjjj678hjkkjjjjkkppknkkkk