How to Differentiate Pronouns in Listening

That, which, when, where, who, how, what, whose, why, and whom.

When I’m preparing for TOEFL Listening, I noticed that I always lost pronouns in sentences. So I used YouGlish to practice these pronouns. However, no one told me the pattern of these words, and I don’t know how frequency and circumstances when people use these words. In other words, I…