No, that wouldn't be a complete sentence.
You could end a phrase with are. eg You are stupid. No I am not. You are!
no
It may be. There is no word in English that cannot begin or end a sentence. The idea that certain word are unfit to end a sentence comes from Latin grammar, not English.
Yes, it is grammatically correct to end a sentence with the word "so." However, it may be informal or conversational in style.
If my computation is correct, the world will end this December.
Only in one context, which is seen in the question: you used "the" as a noun exemplar of "the word" and the object of analysis, and not as a grammatical component of the sentence. When used as an article, "the" cannot appear at the end of a sentence.
What is your father is not a correct sentence. The word father is not a what but a who. The correct way to word it would be, who is your father?
No, because we do not end a sentence with the word 'at'. Simple asking "Where is she?" conveys the same inquiry, and 'at' is unnecessary.
No it is not proper to end a sentence with the word "from" as it's considererd a prepostition. For example, the proper way to ask the question, "Where do you come from" is "from where do you come." May sound a bit odd, but it's the correct way to ask the question. As a general rule, if you're ending a sentence with the word from, correct it by simply moving from the end of the sentence to the beginning.
No, it is not a correct sentence. Consider rephrasing to "We will need your money the the end of March."
Yes, I can: I didn't get a ride, I got here on my own.
Yes. There is no English word that cannot end a sentence.
Yes, it is grammatically correct to end a sentence with the word "at" in certain cases, such as in informal speech or when emphasizing a location or time. For example, "Where are you going to meet me at?" However, in formal writing, it is generally better to rephrase the sentence to avoid ending with a preposition.