Answer:
I can run but not walk. Wherever I go thought follows close behind.
I am a protector. I sit on a bridge. One person can see right through me while others wonder what I hide.
I'm blue, but when you see me I'm red. You don't see me too often. I'm there for you if you're hurt, but I'm good for you. What am I?
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.
I love spinach.
What language does a billboard speak?