You can create Question Banks at the account-level.
Edit Bank Details
Type the name of the question bank in the Bank Name field . Click the Bookmark icon to bookmark the question bank . Press Return (on a Mac keyboard ) or Enter (on a PC keyboard) to create the question bank.
View the questions in your question bank. To view question details, click the Show Question Details checkbox.
This question bank can now be referenced in many different quizzes.
Note: Question details are not available in question banks with more than 50 questions.