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Professor Smith will come here to give a speech. All the preparations must be _____ before 5 o’clock.
A．in timeB．in sightC．in place D．in control
C

試題分析： A及時，遲早；B在視野之內；C在合適的地方；適合；準備就緒；D在控制中；句義：斯密斯教授將要來這里做一個演講，在5點之前所有的準備工作都要準備就緒。根據(jù)句義說明C正確。
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