What has one letter and starts with an E?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

What has many keys but can’t open a single lock?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

I have no life, but I can die. What am I?

Can you write down eight eights so that they add up to one thousand?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?