Yes, it is.

English Teacher
Is it acceptable in oral speech not to do the inversion and form the question by using affirmative and simply changing the pitch of our voice?For example saying "You live here?'instead of "Do you live here?'?
Yes, it is.
***** NOT A TEACHER *****
That is a wonderful "secret" that many students do not know about.
If an English learner is not sure about how to start a question with Is? Was? Do? Does? Did? Have? Has? etc.,
simply say a regular sentence and raise your voice toward the end of the sentence:
Excuse me. You speak ENGLISH?
He visited you YESTERDAY?
You want some ICE CREAM?
Mr. X has been elected PRESIDENT?
You are going to marry MONA?
Of course, a person should not do this on a regular basis -- only in an "emergency." And when you become fluent in
English, you can then use this method naturally -- as native speakers do. That is, native speakers use this method in
certain situations: Mona is getting MARRIED? ( = Did you say that Mona is getting married?)
*****
You understood my POST?
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