Answer:
I know a word of letters three. Add two and fewer there will be. What is the word?
What insect does a blacksmith manufacture?
You will always find me in the past. I can be created in the present, but the future can never taint me. What am I?
People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?
By myself, I'm practically nothing. Worthless as a leader, but when I follow a group, their strength increases tenfold. What am I?
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk