could you guess a riddle?

Could you guess this easy riddle:

"What goes up and down at the same time?"

Then ask your riddle, please 

oh! that's a very difficult riddle, Haak!

I have no idea

what about the next one:

"If 20 blackbirds are on a fence and you shoot one,

how many remain?"

 It's zero !yes or no ?

  yes , you have guessed my riddle

If 20 blackbirds are on a fence and you shoot one, how many remain?"  the answer: none, they would all fly away from the sound of the shot!

the first time you said "0 in a house", now "1 in a house",

you muddle me up!

somebody, please help !!

ha-ha! it's very easy indeed!

ok! now the next riddle:

" What starts with T, ends with T and full of T?"

What do you throw out when you want to use it and take in when you don't want to use it?

Is it a Yo-yo?

Next one, what month that soldiers hate?

What do you thro out when you want to use it and take it when you don't want to use it?

It's a ball.

What can you put in a wood box that will make it lighter?

"What can you put in a wood box that will make it lighter?"

mmm… maybe balloon?

next riddle:

"I strike each hour.

But don't forget:

You must not strike me,

My good friend!"

what am I?

You are wrong Luckkitten..Make more holes in the wood box which will make the box lighter.

May be Hour Clock is the answer for your riddle

ok can somebody guess this:

"The strangest creature you'll ever find: Two eyes in front and many many more behind".