Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

How can you leave a room with two legs and return with six legs?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

What will you call your mother's brother's brother-in-law?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

Which English verb becomes past tense just by rearranging the letters?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

What English word has three consecutive double letters?

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho