求这道英语被动语态习题讲解?we could ask someone to do the work privately without it _____.A.be known B.being known C.to be known为什么?

英语被动语态习题 英语被动语态的讲解 求这道英语被动语态习题讲解?we could ask someone to do the work privately without it _____.A.be known B.being known C.to be known为什么? 详细讲解英语中的“被动语态” 求英语被动语态与主动语态讲解谢 被动语态的讲解 讲解被动语态, 被动语态的讲解 被动语态讲解We always keep the classroom clean.改成被动语态? 被动语态 知识讲解 英语中用主动语态表被动含义的词有哪些 被动语态 知识讲解 英语中用主动语态表被动含义的词有哪些 求大神给我讲解一下英语中的被动语态. 被动语态讲解一下哦!~~ 被动语态希望详细讲解 被动语态讲解如何引入 被动语态的详细讲解 初二被动语态习题,越多越好! 主动语态改为被动语态的讲解