【单选题】Mary often forgets ________ her English book.
【单选题】Mary ______ down the, notes on the board into her book.
【单选题】TCP/IP参考模型中,路由选择功能由( )层完成。
【单选题】在TCP/IP参考模型中,路由选择功能实现在( )。
【单选题】施工项目经理部是( )的施工现场生产组织机构,工程项目验收竣工即自然解体。
【单选题】Mary is looking for the book she lost yesterday
【单选题】- ________ book is this? -- It's Mary's.
【单选题】— What's this in English? — It's _____ English book. _____ book is Mary's. [ ]
【单选题】John is collaborating with Mary in writing a book.