What 8-letter word has one letter in it?

Two legs I have, and this will confound: only at rest do they touch the ground! What am I? 
Show Answer            Hide AnswerA Wheelbarrow

 

Two men got a lion and a goat to a river. They have only one boat. It is small and can only carry a man and an animal. How can the men and the animals reach the other side of the river?
Show Answer            Hide AnswerThe men row across. One comes back takes the lion to the other side, then rows back and takes the goat.

 

Two mothers and two daughters go to a pet store and buy three cats. Each female gets her own cat. How is this possible?
Show Answer            Hide AnswerThere is a grandmother, a mother, and a daughter.The grandmother is also the mother's mother, so there are 2 daughters and 2 mothers, but only a total of 3 people.

 

We are all around, yet to us you are half blind. Sunlight makes us invisible, and difficult to find. What are we?
Show Answer            Hide AnswerStars.

 

We are little creatures; all of us have different features. One of us in glass is set; one of us you'll find in jet. Another you may see in tin, and the fourth is boxed within . If the fifth you should pursue, it can never fly from you. What are we?
Show Answer            Hide AnswerWe are vowels.

 

Weight in my belly, Trees on my back. Nails in my ribs, Feet I do lack. What am I?
Show Answer            Hide AnswerI am a ship.

 

What 8-letter word has one letter in it?
Show Answer            Hide AnswerEnvelope.

 

What are the next 3 letters in this riddle? o t t f f s s _ _ _ 
Show Answer            Hide Answere n t . The first seven letters stand for - one two three four five six seven

 

What are the science teacher's favorite states?
Show Answer            Hide AnswerSolid , Liquid , and Gas ... The States of Matter! 

 

What begins and has no end? What is the ending of all that begins?
Show Answer            Hide AnswerDeath or decay.