This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to tutor mathematics
Know the material.
If you know algebra really well, but are not as strong in calculus, only tutor algebra. Your students are learning from you and they can't do that if you don't know the material inside and out.

Pick from:
[1]. Set an example for the students in class. For example, if anyone ever asked you if you could make algebra down to none, don't say, " i can't make algebra down to no help whatsoever..
[2]. Get a good tutor and don't challenge them. This will help you feel more confident and competent..
[3]. Therefore, you must already know better in algebra. Understand that before they begin lessons, you need to be the one to hold the tutoring session, provide help and warm up projects, and rake out income from the tutoring..
[4]. You also want to make sure you know the math standards that your student is expected to be proficient in. If you can't solve all of the problems your student presents you, you shouldn't be tutoring the subject..
The answer is:
[4].