Everybody has arrived. It's time we ____.
A. would start
B. shall start
C. started
D. had started
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信息高速公路的建设促进了电信产业的结构调整,出现了大规模的企业重组和业务转移, 电信运营商纷纷把竞争的重点和大量的资金,从广域网的建设,转移到高效、经济、支持大 量用户接入和持多种业务的城域网的建设之中。回答问题 1 到问题 3。【问题 1】宽带城域网的网络平台采用什么样的结构,这种结构有何优越性。【问题 2】组建城域网的基本原则是什么?【问题 2】组建城域网的基本原则是什么?
He borrowed a book the other day , the author ____ is a worker.
The bike ____ he went to school was stolen last week,which made him feel sad.
There __________ a cat and two dogs in my home
A. be
B. is
C. are