That math problem really ..... me. I was quite perplexed about how to obtain the solution.
**(*) envied**
**(*) angered**
**(*) confused**
**(*) calmed**

This is a companion discussion topic for the original entry at https://english.best/questions/20222,that-math-problem-really-___-me-i-was-quite-perplexed-about-how-to-obtain-the-solution/