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.
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.
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?
Ending a sentence with the word "from" generally sounds awkward and is not considered proper grammar in most cases. It is better to rephrase the sentence to avoid ending with a preposition like "from."
No, it is not a correct sentence. Consider rephrasing to "We will need your money the the end of March."
Yes. There is no English word that cannot end a sentence.
Yes, "He poured water into the glass." is a grammatically correct sentence as long as the first word is capitalized and there is a period at the end.
With the exception of capitalizing the first letter of the sentence and a period at the end, the sentence is correct.