Looking on the internet deeply has found these results:

It is doubt whether is the most popular phrase on the web.

It's doubt whether 11 results on the web	It is doubt whether 139 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Sep 17, 2014 ... English advanced vocabulary_and_structure_practice_8033. 1. IMACIEJ MAIIASEK. ENGLISH ADVANCED VOCABULARY AND ...	information as his supervisor said “it is doubt whether, in reality, one man could have done all the work…attributed to Garbo.”28 Although the Spanish network ... In spite of the best efforts of the Association, it is doubt whether Telugu language and culture will survive the vicissitudes in the era of globalization. Therefore ... ... there between yourself and Him; secondly, it is due to the suspicion of whether He is really going answer your prayer; thirdly, it is doubt whether you are meant ... Jun 25, 2015 ... It is doubt whether some existent researches would not be available in other culture scenes [7]. Previous researches mostly focused on how ...

It's doubt whether

11 results on the web

It is doubt whether

139 results on the web

More popular!

Sep 17, 2014 ... English advanced vocabulary_and_structure_practice_8033. 1. IMACIEJ MAIIASEK. ENGLISH ADVANCED VOCABULARY AND ...

information as his supervisor said “it is doubt whether, in reality, one man could have done all the work…attributed to Garbo.”28 Although the Spanish network ...
In spite of the best efforts of the Association, it is doubt whether Telugu language and culture will survive the vicissitudes in the era of globalization. Therefore ...
... there between yourself and Him; secondly, it is due to the suspicion of whether He is really going answer your prayer; thirdly, it is doubt whether you are meant ...
Jun 25, 2015 ... It is doubt whether some existent researches would not be available in other culture scenes [7]. Previous researches mostly focused on how ...