A new computer or browser might also come with some of the features turned off. It's typically under something like Tools, Options, Advanced, Scripting. Click on to allow scripting.
If you are using Edge as your browser in Windows 10 this page won't work, open it in Internet Explorer instead.
If it still doesn't work or if you are using a tablet so you can't drag things around, you can still try to figure out the questions and then click on the hint and answer links to see if you are right.