Looking on the internet deeply has found these results:

most of it is is the most popular phrase on the web.

most of it are 10 results on the web	most of it is 11,120,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	a great majority of; nearly all: most people like eggs; (as pronoun; functioning as sing or plural): most of them don't know, most of it is finished. 2. the most. 11 hours ago ... Oculus Users Freak Out Over VR Headset's TOS, Though Most Of It Is Boilerplate. from the watching watchers the watch dept. So Facebook's ... a great majority of; nearly all: most people like eggs; (as pronoun; functioning as sing or plural): most of them don't know, most of it is finished. 2. the most. Jul 25, 2011 ... The phrase "Most of it's in English" is grammatically correct (it's short for "Most of it is in English"), but it doesn't feel right. Is there a reason it ...

most of it are

10 results on the web

most of it is

11,120,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

a great majority of; nearly all: most people like eggs; (as pronoun; functioning as sing or plural): most of them don't know, most of it is finished. 2. the most.
11 hours ago ... Oculus Users Freak Out Over VR Headset's TOS, Though Most Of It Is Boilerplate. from the watching
watchers
the
watch dept. So Facebook's ...
a great majority of; nearly all: most people like eggs; (as pronoun; functioning as sing or plural): most of them don't know, most of it is finished. 2. the most.
Jul 25, 2011 ... The phrase "Most of it's in English" is grammatically correct (it's short for "Most of it is in English"), but it doesn't feel right. Is there a reason it ...