What do you answer even though it never asks you questions?

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

_ _ _ IE _ _
_ _ _ IE _
_ _ IE _ _
_ _ IE _
_ _ _ _ IE

Like you see, some letters have gone missing from these words that contain the IE pair at some or the other place. The letters that will be used to fill the blanks are given below. Use them and form meaningful words. Can you do that?

A, C, D, F, H, K, L, M, N, N, O, R, R, S, S, S, T, T, Y and Y.

By using 'because' continuously three times, can you make an English statement ?

I look at you, you look at me, I raise my right, you raise your left. What am I?

It belongs to you, but other people use it more than you do. What is it?

You can see it everyday, But cannot touch it at will. What is it?

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 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?