Answer:
how many letters are there in the alphabet
Long and slinky like a trout, never sings till it's guts come out.
What type of bar gets you wet walking in and out of it but keeps you dry inside?
You get many of me, but never enough. After the last one, your life soon will snuff. You may have one of me but one day a year, When the last one is gone, your life disappears.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.