Short Riddles and Answers

Question: In what year did Christmas and New Year's fall on the same year?

Question: I fasten to walk,
and unfasten to stop.

What am I?

Question: Is an older one-hundred dollar bill worth more than a newer one?

Question: Draw, fire, or fill me;
I'm still empty.

What am I?

Question: I am a thing, when I look at him , he looks at us!! who am I???