What begins with an “e” and only contains one letter?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

The more you take, the more you leave behind. What are they?

What word of five letters has one left when two are removed?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

How do football players stay cool during a game?

The person who makes it has no need of it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

A man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

What can fill a room but takes up no space?

What is so fragile that saying its name breaks it?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

What has four wheels and flies?