Gemini Gives Wrong Grammar Answers Right Before Student's Exam

I'm an LGS (high school entrance exam) student, and I use Google Gemini often while studying. But the errors I've run into have both really surprised me and seriously worried me about my future. I asked about the other meanings of the word "to mention" and which form was grammatically correct, but the system showed the correct form as if it were wrong. I use this platform as a reliable source, and because of mistakes like this, if I end up using the same incorrect information on my exam, I could lose points. On top of that, these wrong answers are wasting my time — I'm taking the LGS exam this weekend, and I don't want to lose any more of my remaining time to errors like this. I'm not just worried about myself, but also about other students using this tool who could be misled and have their futures affected, potentially being forced into a career they didn't want just because of a few points' difference. What's at stake here is our future. I want Google Gemini to be made much more careful and reliable, especially on topics directly tested on the LGS exam, like grammar and semantics, and I want these kinds of obvious errors to be identified and corrected, with stronger checks put in place so students can get accurate information without wasting their time.