No.
A sentence always starts with a noun or a pronoun and in some cases it is started by 'It' and 'There' as subject.
'Who' and 'What' are the question words and also they are used as pronouns.
Example sentence - It is easy to ask questions to avoid getting into trouble.
To locate the subject of a sentence, identify who or what the sentence is about. The subject is usually a noun or pronoun that performs the action of the sentence. Look for the main verb in the sentence and ask "Who or what is doing the action?" to determine the subject.
Ask is always a verb. If ask is used at the beginning of a sentence then the sentence would be an imperative sentence/question. Ask Jon to stop the noise. This is an imperative question because there is no subject. The subject is implied/suggested. The subject is 'you'. (You) ask Jon to stop the noise.
ask questions about everything
questions
My entreaty for you is to please continue to ask questions.
You repeatedly ask questions.
You ask too many questions.
If you continued to ask more questions, you might get a prize!
Jane is the subject of the sentence. An easy way to find the subject is ask yourself, "Who are what did the action?"
If you are asking whether the words "Is this a question" make a complete sentence, yes-- but not a declarative sentence. They make a question, and they need a question mark at the end. A declarative sentence is just a statement of fact: "Yes, this is a complete sentence." But a question is where you ask someone about something: "Do you have any questions to ask me?"
You ask questions or read about a subject to learn