Answer:
The man stood on a block of ice which has since melted.
Answer:
because there were no cameras
Explanation:
Everything you need to make a good meaningful sentence (and grammatically correct, of course), is to follow common rules. Do not forget to provide your sentence with complexity, but you don't have to make them too complicated, I mean you need to use key words, they will make your thought completed. And the second point is that you need to properly organize the sentence using correct word order. ion:
To judge whether or not you are a motivated person who aims to push yourself to your fullest potential.