试题详情
—Have you ever worked as ____volunteer during the COVID-19 pandemic?
—Yes. It was ____unforgettable experience for me.
- A、a; a
- B、an; an
- C、a; an
- D、an: a
知识点
参考答案
采纳过本试题的试卷
—Yes. It was ____unforgettable experience for me.