q1) sabre-tooth tigers are believed to have been driven to extinction 10,000 years ago by human hunters
in north america.
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=it is believed that sabre-tooth tigers were driven to extinction 10,000 years ago by human hunters in north america.
2022-05-16 06:56:19
네 맞습니다. 원래문장에서 have pp 는 문장의 시제인 현제보다 예전시제라는 것을 나타내므로 님이바꾼문장에서 were driven 과거로 바꾼것이 맞습니다.