0

One of the successful managers were asked

or

One of the successful managers was asked

3

Purdue OWL has this example which is almost identical to OP's case:

One of the boxes is open.

The verb agrees with the subject, "One". If you wanted to talk about "two", you would use a plural verb:

Two of the successful managers were asked.

One of the successful managers was asked.

  • Yes, those sentences are standard. – Lambie Apr 12 '18 at 16:07

Not the answer you're looking for? Browse other questions tagged or ask your own question.