Using the Question Bank
Questions can be added to a new Quiz through the question bank. Questions may be searched for by either by the quiz(zes) or by the course(s) that they are included in.
Create a Quiz.
After creating the quiz, click the "Edit questions" link.
Click the "Questions by Quiz" tab or the "Questions by Course" tab (7.6+).
Adjust the filters to limit the list of questions.
Check the box next to the questions to add to the Quiz.
Click the "Add questions to quiz" button.
The selected questions are now in the Quiz.