Open your source module where the questions that you want to reuse are located.
Select More from the contextual navigation menu.
Select Question bank.
From the Questions drop-down menu on the top left of the page, select Export .
In Moodle 3.9, Question bank is available from the Settings menu on the right of the page.
Select file format
Select Moodle XML format.
Select category
Choose the relevant category from the Export category drop-down menu.
Do not uncheck Write category to file or Write context to file. These settingsensure that your imported questions are stored in a separate category when you import them.
Select Export questions to file button.
Save XML file
An XML file will be automatically generated. Save this file to your computer.