no but if you add a comma and some words it is
Yes, I can start a sentence with "Is."
Yes, "you" can be the subject in a sentence. For example, in the sentence "You are my friend," "you" is the subject.
No, it is not a complete sentence. It is a fragment.
yes yes yes
Yes, it is, in all grammatical ways a sentence.
Yes, that is a sentence use upswing yes.
yes
Yes, "Who are you?", is a correct sentence.
yes (or no) but if we are to take it the sentence is 'are you lying?' then the answer is yes or no.
Yes, I can! Yes, your Honor. Yes, your Grace.
Yes, "This was it" is a simple sentence.
Yes, this sentence is correct.
No, it is not a complete sentence. It is a fragment.
yes...yes it is..
He will return. Yes, this is a complete sentence.
Yes, this is a sentence with the words "has" and "an".
yes you can disconnect a sentence