Have you found ways to make waste water clean?改为被动语态

Have you found ways to make waste water clean?改为被动语态 Have you found your pen( have i found you是 where have you found it? where you have found contact People have found some ways to get ___(drink) water from sea water有理由的 The ways to make waste water clean have been found by them.翻译 They have found ways to make waste water clean.的被动语态则怎么变? 改被动语态 They have found ways to make waste water clean. We have found ways to explore the bottom of the sea. You have found her own happiness是什么意思 have you found your partner是什么意思 改错 Have you found your missed pen I hope you have found this useful have you found that special someone yet? you can't have it both ways.怎么翻译?both ways是两方面的意思吗? 一道超难的英语填空题,Have you ever written someone a note?Have you ever sent an email?If so,you were sending a message.People have always found ways to send messages to each other.The way we send messages has changed over time.Each change h -()have you lived in shanghai?-Since we ()work here.A.When;have found B.How long;found C.When;have found D.How long;have found