Answer:
I am always coming but I never arrive. What am I?
What word has kst in the middle, in the beginning, and at the end?
Though I am only two words I have thousands of letters in me
I am made by nature soft as silk; A puffy cloud white as milk; Snow tops this tropical crop; The dirtiest part of a mop.
What is easy to get into but hard to get out of?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.