What does this rebus riddle means ?

Something Extraordinary happened on May 6th 19778 at 12:34am what was that?

The centre of the third figure is empty. What digit should fit inside?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

The host of a game show offers the guest a choice of three doors. Behind one is an expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?

What word begins and ends with an E, but has only one letter?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?