Reading the directions to a test is important because
a. The directions may help you from being confused about how to answer a question
Explanation:
Test directions are nothing more than instructions, they describe exactly what is expected from you in the test and tell you how you can do it. Reading them carefully will put severe advantage on your side instead of you only acting under inference without reading them. Because the instruction can be a trap, like select the only incorrect answer for the question. Drawing a Pikachu on its left side. Even when it has letters and circles to be filled.
for #5, you are correct that to come is not a prepositional phrase because there is no object. If I were you, I'd leave it alone and keep the one next it. all others look correct.
