You can re-use your test questions, by importing them from one test into another. If you have created a new Questionnaire (Exam or Quiz) and want to import/copy some questions from another Questionnaire in a different course, follow the steps below.
1. Click on Import questions, while in the Edit mode.
2. Click on Other courses.
3. Choose the course from which you want to insert questions. Then locate the questionnaire and check the question you want to import (to import all of them just click on the checkbox next to the questionnaire title). and click on Import.
The questions have been imported to your new questionnaire. Click on Save to save your changes.