It's very important that you print your PrepTests correctly. If you don't, you're denying yourself the opportunity to get comfortable with the actual layout of the test.
Here are the simple steps to follow:
1. Scroll to the first page of Section 1 of your PrepTest.
2. Scroll back 1 page so you're on the page before the first page of Section 1.
3. Start printing on that page.
This way, whether you print single sided or double sided, you'll get the correct layout. An added bonus is that you are NOT printing the cover page which just wastes ink.
Reading Comprehension, for example, opens up like a book. Passage on the left hand side, (most of the) questions on the right hand side. No flipping the page back and forth to go from passage to questions or vice versa.