摘要： -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
网址：http://m.1010jiajiao.com/timu_id_1356046[举报]
---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