can you have the letter mailed是被动语态吗

can you have the letter mailed是被动语态吗 Did you write the letter?变被动语态是什么? have been married 是被动语态吗 have been here 是被动语态吗 变被动句 have you finish the letter yet Have they paid you the money?被动语态是什么? Have you posted the letters yet?变被动语态 Have you posted the letters yet?改成被动语态 They must have lost your letter in the post 怎么变被动语态 Have they posted the letter yet?改为被动语态如题 把Did you send the letter to Tom?改成被动语态 You should write the letter as soon as possible如何改成被动语态