Can you tell me a 3 letters word that will change a girl into a woman

One day i was driving my car and it got stuck when passing through an low height underpass.
Suddenly my friend Stan comes with a needle and got my car out of underpass.

What did the stan do ?

What is the center of gravity ?

What kind of storm is always in a rush ?

What common phrase does this Rebus says ?

13 people came into a hotel with 12 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the thirteenth guest to wait a little with the first guest in room number 1. So in the first room there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the twelfth guest to room number 11. Then he returned to room number 1 and took the thirteenth guest to room number 12, still vacant.
How can everybody have his own room?

Why do people go to bed ?

What phrase is represented by the rebus ?

once
time

You are driving a bus through city.

* At the start there was just driver and his helper.
* At the 1st stop, 10 people get on and 7 people get off.
* At the 2nd stop, 17 people get on and 3 people get off.
* At the 3rd stop, 11 people get on and 1 get off.

* Then the bus drives 8 kilometers to McDonalds and order 33 veg-burgers.
* When the burgers are finished , the bus goes 7 kilometers back and picks up 2 more people and lets off 6.

* Finally at the Hotel Hyatt, all of the passengers get off the bus and leave the driver all alone.

What's the driver's name ?

Two villages owlna and kathur are exactly 2000 km apart.

Pramod leaves City "owlna" driving at 50 km/hr and Anmol leaves City "kathur" a half an hour later driving 90 km/hr. Who will be closer to City "owlna" when they meet?