Wiktionary
is it
alt. 1 (&lit is it English) 2 (context South Africa English) really? is that so? interj. 1 (&lit is it English) 2 (context South Africa English) really? is that so?
Usage examples of "is it".
How is it the biscuits are here, and all the bread and meat and things have disappeared?
Until you asked the question just now it never entered my mind, and my guess is it never entered his mind, either.