Pictures:

What 5 letter word becomes shorter when you add 2 letters to it?

The word 'short'.

988

Why did Arlene bring lipstick and eye shadow to school?

She had a make-up exam.

957

Why didn't Bill use his photographic memory?

He never developed it.

961

What starts with P and ends with E and has thousands of letters.

Post Office.

956

What gets wetter the more it dries.

A towel.

979