Answer:
Lots of them make up a word, And lots of words are in them. It's easy when you think about it. A while ago we stamped and mailed them.
If you happen to wake up at dawn, you'll probably find this covering the lawn.
Round and round I go never stopping in a continuous flow. I hang out with numbers each and every day and nothing ever gets on my way. What am I?
This is your stomach's way of letting you know you've neglected it.
What falls down but never gets hurt?
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?