I cannot talk, but I always reply when spoken to. What am I?

What can you see in the middle of March and April that you can never see in any other month?

What is harder to catch the faster you run?

Why do people go to bed?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

What begins with T, ends with T, and has T in it?

Can you start the fire using two pieces of wood?

Why is it very easy to weigh a fish?

What kind of band never plays music?

What 5-letter word typed in all capital letters can be read the same upside down?