They are not verified because they did not do what they needed to do to be verified.
It wasn't ever really said but he has a twitter if you want to ask him :).
He doesn't have a verified account.
Her verified twitter is ryrynewman
She does not have a verified Twitter account.
His verified account is @achrisevans
Twitter typically verifies famous celebrities, organizations, and companies. They don't just give out verified accounts. You would need to become famous to get your account verified.
Her verified Twitter account is @haydenpanettier
There isn't a verified Twitter account.
Yes. His verified Twitter account is @adamsandler
He doesn't have a verified account.
Rebecca Black's verified Twitter account is @MsRebeccaBlack
Verified Twitter - @KendallJenner