Answer:
Be sure to shout for its answers are weak, but there is no language it cannot speak.
Add a T and I shoot through the sky. Then add an S and I multiply. What word is it?
I never was, am always to be. No one ever saw me, nor ever will. And yet I am the confidence of all, To live and breath on this terrestrial ball.
By the way, what never moves, wears shoes, sandals and boots, but has no feet?
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.
People take me on walks and I run and have fun. What am I?