Lion!

WYR shoot with a longbow or shortbow?

Shortbow. 😀
WYR ride in an ambulance or a a Police Car?

Um for fun or for serious matters? 😛 (riding in either one means your not doing too hot 😉 )
I guess I'll say riding on a police car 😀
WYR
Be an enemy of Aragorn or Legolas?

Haha. 😆 I would say the same thing. But I meant for fun. 😀
Aragorn. 😀 Legolas has a bow.
WYR ride a sleigh or a covered wagon?

Sleigh! 😀
WYR
use firefox or explorer as internet browsers 😛

Firefox. 😀
WYR walk through a corn field or a wheat field.

*agrees about firefox*
Wheat field ^.^
WYR
eat mashed potatoes or a baked potato?

Mashed. 😀
WYR eat a hotdog or a hamburger?

Hamburger!

WYR have hot sauce or horseradish on pizza?

HOT SAUCE!! 😀 (I love the stuff. But I'm very particular about it too. Don't like mild and don't like sweet.)
(btw, I would have chosen Legolas for an enemy and... Firefox for the win! 😀 )

WYR read a book in a tree or by a stream?

A stream! 😀
WYR be an anteater or an armadillo? (blame science class)

Armadillo.

WYR do analysing for a story then write an essay for English or a do political essay for History?

the English one

WYR learn to play a new instrument or excel in one you already know?

learn to play a new instremunt. Now intersted in the penny whistle
WYR hang out with Arsheesh or Ahoshta?

Arsheesh.

WYR believe in ghouls at the tombs or be afraid of the woods?