If you want questions to be reviewed before they are added to an assessment, You can now mark questions as 'Reviewed' or 'Not Reviewed' and keep track of the questions reviewed.
To mark the question as reviewed: Click on My Question Tab, select the topic which needs to review.
On the right side of each question, there is a small icon for the questions review.
Refer the below screenshot

Also, you can refer the GIF below: