Did you sent the letter in registered mail? A:Registration fees are paid in advance. B.Yes, and I send it express. C.Nobody revised it. The correct answer is "A", but I think answer B is also possible. 請老師們幫我解答!thank you very much.

Hello, registered letter是掛號 send something express是快遞 所以B不太正確 除非是No. I sent it express.就可以 Cheers!!

Hello... 此題你確定有抄對嗎? It didnt make sense to me.