Standard for means it is written in words: four hundred ans fifty would be the answer.
Proper nouns are names of people, places, rivers, etc. So, having that in mind, the correct answers are A) Fred, because that is the name of a human, and D) Colorado River, because that is the name of a river.
Answer: be shocked cause i thought all you tubers dropped out of school
<h3> the Principe part of the verb used in present </h3>