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

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

What word is pronounced the same if you take away four of its five letters?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

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

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

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?