You should treat those questions as what they are -- practice. No question is as good as the official source questions -- but the problem is there is a limit of supply of such questions. AND, the explanation for some of these official questions can be difficult to grasp.
As such, you should aim for 100% accuracy but focus more on thought process -- why an answer choice is correct and why an answer choice is not. In terms of "measuring" your progress, you should do this in the beginning
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As such, you should aim for 100% accuracy but focus more on thought process -- why an answer choice is correct and why an answer choice is not. In terms of "measuring" your progress, you should do this in the beginning
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