Yes, but it would have to be a convoluted sentence in order to still contain a complete and coherent thought.
Example: "With both your feet tied together, it is still possible to move."
This is grammatically correct English, although it would be far more natural to say it the other way around: "It is still possible to move with both your feet tied together."
Yes. There is no word that cannot begin an English sentence.
Yes, you can begin a sentence with the acronym "NASA."
The word 'is' can begin a sentence but not be a question when it is the subject of the question. Example sentence - Is can be the subject in a sentence. But only in sentences of that type (above) or, 'Is' is a two letter word. Otherwise is cannot begin a sentence.
Good question! But heres the answer: A sentence can begin with eg such as 'Eggcups are for holding a boiled egg',but a sentence can also begin with e.g such as: e.g is the abbreviation of 'for example'.
In this sentence, 'when' is an adverb; 'you begin when'.
It is possible to have a sentence with the word it at the beginning, as this sentence proves.
Therefore, because it is not improper, one may begin a sentence with "therefore."
yes
Yes
Yes.
No
I will now begin the demonstration. Let's begin at the beginning.