[trafix]

OK,

1) Write a short story based on a theme that suits your site.

The cat sat on the mat playing with a ball

2) Look for words in the story that could be exchenged with other words, they will be your user variable

The cat sat on the green mat playing with a ball

3) Add the test to your story like this

Your Text - 1 The

User Question - 1 Please enter an animal.

Your Text - 2 sat on the

User Question - 2 Please enter a colour.

Your Text - 3 mat playing with a

User Question - 3 Please enter a toy.

GOOD LUCK!