题目

— Did you watch the news? Some robot police ______ to work with traffic police in Hebei ,China ,on August 7th.—That’s amazing!A.have send B.were sending C.were sent D.will send 答案：【答案】C【解析】句意：——你看新闻了吗？ 8月7日，一些机器人警察被派往中国河北，与交通警察合作。——太神奇了。考查一般过去时被动语态。A. have send 搭配错误；B. were sending 正在发送；C. were sent被发送；D. will send将会发送。根据句中on August 7th，可知时态为一般过去时；robot police与send之间是把下面的句子改成否定句和疑问句 That's a desk. 否________疑________？