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has worked worked had worked works
20 years old 20 year old 20-years-old 20-year-old
that; which which; that where; that that; where
acquainted informed enlightened advised
acquainted informed accustomed known
the one that in which the one where
When How often How long How far
acquainted informed known advised
opened opens has been open has opened
works has worked worked was working
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takes take took will take
has worked worked had worked works
the one where in which the one where
founded will found founds is founding
They never supported the hospital. The plant is near the hospital. Many chemicals for industry are not tested. He coughed so hard that he broke his ribs.
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