题目内容
---Simon, do you know who invented the kite?
---Sure! It ____ by Mozi over 2,000 years ago.
A. is invented B. invented C. was invented D. will be invented
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题目内容
---Simon, do you know who invented the kite?
---Sure! It ____ by Mozi over 2,000 years ago.
A. is invented B. invented C. was invented D. will be invented