What does this rebus puzzle means ?

What brings you down but never up?

What can go through glass without breaking it?

Identify The phrase in the picture.

Make a sentence consisting of three words that have the whole alphabet.

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

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

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

How many times can you subtract the number two from the number fifty?

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?