Although he knew little about the large amount of work done

Although he knew little about the large amount of work done in the field, he suc

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Sir Dennis, who is 78, has made it known that much of his co

Sir Dennis, who is 78, has made it known that much of his collection (  )to the

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The computer works very fast, (  )data at the speed of light

The computer works very fast, (  )data at the speed of light.A.handling B.having

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John regretted(  ) to the meeting last week.

John regretted(  ) to the meeting last week.A.not going B.not to go C.not having

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The Viking are believed (  )America.

The Viking are believed (  )America. A.to have discovered B.to discover C.in dis

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