Question

【题目】Eric has been teaching himself French since 3 years ago. (对划线部分提问)

________ ________ has Eric been teaching himself French?

Answer 1

【答案】How long

【解析】

划线处since 3 years ago“自从三年前”，是一段时间，对此提问要用how long“多久”，位于句首的单词首字母要大写，所以空格处填How long。故答案为How long。