优优班--学霸训练营 > 知识点挑题
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            • 1. The radar sets                  for a long time without any trouble.(  )
              A.have been running
              B.have been run
              C.have run
              D.were running
            • 2. I"m sorry you______________so long, but it"ll still be some time before Jim gets back.(  )
              A.wait
              B.waited
              C.had waited
              D.have been waiting
            • 3.
              The boys have         the stamps for two years.(  )
              A.been collected
              B.been collecting
              C.to collected
              D.collecting
            • 4.
              She said she would telephone but we ____________from her so far.(  )
              A.haven"t heard
              B.didn"t hear
              C.hadn"t heard
              D.won"t hear
            • 5.

              Some 25,000 people were reported ______ in the ever recorded worst earthquake in Iran, which occurred late this month.

              A.were killed
              B.to be killed
              C.killing
              D.to have been killed
            • 6.
              We have been                 (滑冰) for a long time.
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