tricky riddles with answers

Which english word has three consecutive double letters

ANSWER: BOOKKEEPING

What can go up a chimney down but can't go down a chimney up ?

ANSWER: AN UMBRELLA

Follow you all the time and copy your every move,but you can't touch me or catch me.what i am ?

ANSWER: YOUR SHADOW

What starts with the letter ''t'', is filled with ''t'' and ends in ''t''?

ANSWER: A TEAPOT

Poor people have it, rich people need it.if you eat it you will die. what is it ?

ANSWER: NOTHING

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