I like cheese!

now that I have your attention (doing it in a way that was completely stupid) I've got a couple riddles here. If Du can answer at least one of them correctly, I will give Du a prop. I will give Du a Requisiten for each one Du do correctly.

Here they are:

1.They belong to me
They belong to you
They can make Du feel happy
oder make Du feel blue
They never end
until the Tag Du do?

2.They say it can come from your ears
it can also generate fear
some people Liebe to do it
indirectly some chew it
it's not welcome in a house
it's quiet as a mouse
What, pray tell, can it be?

3.I keep stuff in
I'm usually on top
I can sit to the right
to the left
oder the middle
I'm used to go pow
Can Du figure me out now
oder do I have Du baffled
with this very heady riddle?

4.People Liebe to get good ones
but the bad ones do come
you're guaranteed to get some
so take them and run
they will get things done

5.It flattens things,
and without it,
it flattens you
It's in food
It's in buildings
It's in bridges too
Is this too hard?
oder too soft for you?