特殊疑问句询问过去情况 — 英语词汇题
题目
补全句子：根据句意和首字母提示，写出单词。
1. Thomas Edison was a great i______ (发明家). He i______ the light bulb long ago.
2. —When w______ he born? —He was born in 1847.
3. —What did he d______ when he was young? —He worked very hard and s______ (卖) newspapers on the train.