It is always ahead of me yet I can never see it. What is it?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Can you name four days which start with the letter 'T'?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Which English verb becomes past tense just by rearranging the letters?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

What begins with T, ends with T, and has T in it?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!