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            • 1． He complained that this was the third time he _____ of the changes of the meeting.

              [     ]


              A. is informed
              B. was informed
              C. has been informed
              D. had been informed
              难度：中等
              解析 收藏 试题篮
            • 2． A Frenchman who lost his arms and legs successfully swam across the Channel, a challenge he _____
              for two years.

              [     ]


              A. has been preparing
              B. had been preparing
              C. has prepared
              D. prepares
              难度：中等
              解析 收藏 试题篮
            • 3． The policeman's attention was suddenly caught by a small box which ______  placed under
              the Minister's car.

              A. has been
              B. was being
              C. had been
              D. would be
              难度：中等
              解析 收藏 试题篮
            • 4．
              Experiments of this kind        in China before the Cultural Revolution in China.

              A. have conducted
              B. have been conducted
              C. had conducted  
              D. had been conducted
              难度：中等
              解析 收藏 试题篮
            • 5．
              Experiment of this kind _____ in both the U.S. and Europe well before the Second World War.

              A. have conducted
              B. have been conducted
              C. had conducted
              D. had been conducted
              难度：较易
              解析 收藏 试题篮
            • 6．
              It was reported that an agreement ____ between the two companies and that they would carry out a project together.

              A. reached
              B. had been reached
              C. was reached
              D. had reached
              难度：中等
              解析 收藏 试题篮
            • 7．
              — George and Lucy got married last week. Did you go to their wedding?
              — No, I _____. Did they have a big wedding?

              A. was not invited
              B. have not been invited
              C. hadn't been invited
              D. didn't invite
              难度：中等
              解析 收藏 试题篮
            • 8．
              At the end of the meeting, it was announced that an agreement ______.

              A. has been reached
              B. had been reached
              C. has reached
              D. had reached
              难度：中等
              解析 收藏 试题篮
            • 9． — The window must have taken you quite a lot of time that day.
              — You are right. They _____ for weeks.
                                                                                                                                                  [     ]
              A. haven't been cleaned
              B. hadn't been cleaned
              C. didn't' clean
              D. haven't cleaned
              难度：中等
              解析 收藏 试题篮
            • 10．
              They would tell how the slaves _____ on a ship to an American port on a rainy day.

              A. being brought
              B. could have brought
              C. had been brought
              D. was to be brought
              难度：中等
              解析 收藏 试题篮
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