Source: Self made to test concept
[Original, full question deleted by Stacey. I've re-written to offer a suggestion as to how you can post something like this, where the full question falls under copyright protection and can't be reproduced in its entirety. Note two things if you're going to do this: (a) you'll have to have a very specific grammar question for this to work, and (b) you may want to post an excerpt of both the right version and the wrong version about which you have a question, when applicable.]
"Women were found to have borne children with heart defects or miscarriages, and none of their pregnancies was normal."
Isnt None of the pregnancies was normal wrong .
INcase of a SANAM pronouns we pick the tense from the of construction in this case pregnancies which is plural so whould be followed by "were"
Am I correct ?