My job interview

Today I had an interview, I wanted to find a job as an English teacher at a cram school. I can't teach at regular schools because I didn't don't have a enter for "Teachers' Teaching Certificate examinations"before, so without a certificate, I can only teach at Cram schools, you know, Cram schools are prevailing in mainland China because almost every parent wants their baby to be NO.1 academically. School grades are everything for kids in China. Well, this afternoon, I stepped into their office and a beautiful young lady received greeted me, and she asked me questions about my basic information and then she asked me,"Mr. Wang, are you able to teach Maths, Physics, Chemistry and Biology?", and I thought to myself, "What? Aren't I applying for as an English teacher here, why on earth do I need to know how to teach all those subjects?have to be an 'almighty' god? I'm not a prodigy!", so I replied, "Sorry, ma'am, I can't, but I can learn how tonow!!". A doubtful questionable expression soon crawled appeared on her face and then spreaded all over it, "Were you good at these subjects when you were a middle school student?", she asked again, "Absolutely no "Not really" I replied, "but I wasn't very good at languages either and today, I'm proficient in languages. and I stunk at them, but I'm good at learning new things and I'm a fast learner really fast." I replied confirmly confidently. She looked at me and said, "Allow me to think about this, okay? I'll call you later".  Well, that was quite an interview!