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            • 1．

              I would have helped you with the problems, but I was o______ with my work at that time.

              难度：难
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            • 2．

              The “cash for trash” program is adopted by companies that ___________ (促进) waste-sorting among householders.

              难度：难
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            • 3．

              ---Who is the student that r_______ class and made the speech at the graduation ceremony?

              ---It’s Harry Porter, who has a great interest in archaeology.

              难度：难
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            • 4．

              He_________(浏览)through the newspaper over a cup of coffee.

              难度：难
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            • 5．

              The suspect(嫌疑人) a __________ his crime to the police.

              难度：难
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            • 6．

              Computers are used to c__________ with each other around the world by the Internet.

              难度：难
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            • 7．
              Born into a family with three brothers, David was _______ up to value the sense of sharing.
              难度：难
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            • 8．
              I ______up immediately and______weightlessly around in our spaceship cabin watching the earth become smaller and the moon larger.
              难度：难
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            • 9．
              People say it is Canada’s most beautiful city, _______ by mountains and Pacific Ocean.
              难度：难
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            • 10．
              I didn’t hear the phone. I ___________ asleep.
              难度：难
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