What 3 letters change a girl into a woman?

Question

Sole the following famous one line Riddles -
1. How can you drop a raw egg onto a concrete floor without cracking it?
2. What looks like half apple?
3. What can you never eat at breakfast?
4. What 3 letters change a girl into a woman?
5. What often falls but never gets hurt?
6. Peter's smart phone fell into a big mug of coffee but didn't get wet. How is this possible?
7. What is dirty after washing?
8. There's a man who can tell the exact score before every soccer match. How on earth does he do that?
9. What spends all the time on the floor but never gets dirty?
10. How many months in the year have 28 days?

Answer 1

(1) The concrete floor cannot be cracked by an egg.
(2) Female genitalia
(5) Rain
(6) The mug contained dry ground coffee beans
(7) The water in which the washing was done
(8) The exact score before a game begins is 0-0
(10) Twelve months

Answer 2

1 - Concrete floors are very hard to crack. A raw egg is too soft.
2 - The other half of the apple.
3 - What I will have for either lunch or dinner
4 - Age
5 - Rain
6 - Because Peter´s phone was waterproof
7 - Water from the washing machine.
8 - At the beginning of the game the score is nil to nil
10 - Twelve months

Answer 3

3 lunch
4 age