"After the blaze, he checked the fire extinguisher to see if it had been properly used."
They were unable to define the word properly. He used chalk to define the edges of the figure.
Tiarra speak very properly.
I had to squint my eyes when looking at the screen because I couldn't see properly.
Fantastical is not a proper word, so it cannot be properly used in a sentence.
They properly declined to discuss the matter with the reporter. He properly ordered the wines by their age.
Atagonastic is not a word and cannot be used in a sentence properly. If you want to use antagonistic, which resembles atagonastic, antagonistic can be used to say, Since he did not pass the test, he was quite antagonistic toward all who did pass.
Properly is an adverb. Here's an example: My mother told me to tie my shoe laces properly.
"Et al." is used in a sentence to indicate that there are additional authors or contributors beyond the ones specifically mentioned. It is typically used in academic writing to reference multiple authors in a citation.
The preposition that would be most correct in this sentence would be "of". However, "from" could also be used as well.
Metabolism is the process by which your body converts food and drink into energy that is used to function properly.
The barn fell down because it was not properly erected.
That question was properly written in the context of grammar and spelling.