no
Yes, it's called parroting or parroting back.
No, starting a sentence with "then" does not make it a complete sentence on its own. It is typically used as a transition word indicating sequence or consequence and should be followed by an independent clause to form a complete sentence.
Answer this question… How do you make a sentence using the word manipulation
The pupil in my class raised her hand to answer the question.
One complete sentence using "set" as a noun is: "I received a beautiful set of dishes for my birthday."
An example of a dependent clause using "who" is: "who lives next door." This clause cannot stand alone as a complete sentence because it relies on the rest of the sentence for context and meaning.
Your question is itself a sentence which uses the word "could".
You, my friend, have just answered your own question.
The plan was complete nonsense and folly.Your question is utter nonsense!
No, starting a sentence with "then" does not make it a complete sentence on its own. It is typically used as a transition word indicating sequence or consequence and should be followed by an independent clause to form a complete sentence.
There are many examples for this such as this sentence itself.
it is your head itself
This isn't a proper question, so it is not answerable. Using a complete sentence would help; you cannot make a question simply by adding a question mark to the end.
This is the answer to your question.
The question is how and when should you question authority.
Your question is a good sentence using the word "common".
Answer this question… How do you make a sentence using the word manipulation
The complete meal had only 750 calories.