Try the new Google Docs Add-On that will take your tests or quizzes made in Google Docs (or uploaded from Microsoft Word, and help transform them into a Google Form. It is not perfect, but can certainly help save some time. While in Docs, just go to Add-Ons, Get add-ons and search "doc to form".
You will probably know some of the things found in this article but will you know all 35 things mentioned?
Nice link to 50 of the best google chrome extensions for teachers.