Answer:
How many letters are there in the English alphabet?
I can be sweet or sour. I do not rhyme with any other word
I am a protector. I sit on a bridge. One person can see right through me, while others wonder what I hide. What am I?
What word is pronounced the same if you take away four of its five letters?
Many people own a copy of me. Without me the world would fall.
What language does a billboard speak?