Actually, when you thinlk about it, YOU are wasting a wonderful learning opportunity..... Sounds like it is time to go back to the basic nursing book and see what else there is to the criteria for the assessment. There are other ways to assess mental function and other things like that other than having the patient answer the questions.
The instructor obviously feels you are ready to be out there on your own, and that you will know when to got back to the book and re-read it if you need to. Part of clinical is developing critical thinking skills, and this is part of it.
Don't ever be afraid to ask questions, but be prepared with some kind of answer of your own, in case the instructor is like some of mine, and says, "What do YOU think?"
I know you are scared and feel like you know nothing, but you actually know more than you think if you are in clinical.
Do the research, and see where it leads you. You will be glad you took the incentive, and the instructor will most likely be thrilled that you did it on your own.