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---Inventors have changed the way we live. ---So they are famous for the great things they . A. do B. did C. are doing D. had done 【查看更多】

 

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---Inventors have changed the way we live.

---So they are famous for the great things they ________.


  1. A.
    do
  2. B.
    did
  3. C.
    are doing
  4. D.
    had done

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— Inventors have changed the way we live.
— So they are famous for the great things they _____.

[     ]

A. do
B. did
C. are doing
D. had done

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—Inventors have changed the way we live.

—So they are famous for the great things they ___.

A. do                B. have done        C. are doing              D. had done

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