1.sent一般过去式的被动语态2,to lose 又如,He is the last boy to come3,having seen 你去的地方多,已见过很多朋友4.someone///If句中用someone表示确实有那么一个人5.after 毕竟,到底
sentto have lostseeinganyoneafter希望回答对您有所帮助,请及时采纳,多谢!
1. sent2. lost3. see4. someone3. above