He began to work at the age of 12.at the age of 12.画线,对划线部分提问_英语解答

He began to work at the age of 12.at the age of 12.画线,对划线部分提问

人气：185 ℃　时间：2020-01-29 06:37:39

解答

保证准确率!
When did he begin to work?
他是什么时候开始工作的?