Ответ:

  1. If they say you are a beauty, it means you are beautiful.
  2. If somebody is of great help, he is helpful.
  3. If there is a big danger, the situation is dangerous.
  4. If somebody likes adventures, he is adventurous.
  5. If something is a mystery, we call it mysterious.
  6. If you get a lot of fame, you become famous.
  7. If something keeps going, the thing is continuous.

Суффикс -ful обычно означает наличие качества, а -ous — обладание признаком или свойством.