【正确答案】 1、opportunity    

【答案解析】原文： I should say that teaching English in China is a real job, and the schools expect you to be professional and you have to work hard. If you don’t meet their requirements, it is easy to get fired. But with a little effort and the right attitude, it will be a very good experience where you will learn a lot about China and yourself! I am so happy that I took this opportunity when I had it, and the memories will be with me for the rest of my life.分析句子结构可知，空格前面为谓语动词took和指示代词this，后面是状语从句，因此空格处应该填入一个名词或者名词短语，充当took的宾语。结合录音填入opportunity。