What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

O_er_t_o_

Complete the missing letters of the given word.

Fate has decided that you will only be pleased to meet me when you need me

Maybe that is why, when I am working, I start working

However annoying I may be to the regulars, the little ones are always inspired

I will always be waiting if you try to reach me

How many of you can guess my name, let me see

What do you see here? Your task is to find three words hidden in the optical illusion

In the picture below can you find the correct switch that will turn on the bulb?

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

I know a nine-letter word having only one vowel.
Do you ?