Air bags for cars were invented lives. Without them more people would be injured in car a

发布时间：2020-08-16 07:44:16


Air bags for cars were invented      lives. Without them more people would be injured in car accidents.  
A. saving
B. saved
C. to save
D. to have saved

网友回答

A. saving
B. saved
(答案→)C. to save
D. to have saved
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