There is something which is always coming but never arrives?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

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?

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

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

_ _ _ 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.

The more it dries, the wetter it becomes. Can you tell what it is?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?