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A survey has shown that 40% of those killed in traffic accidents if they had been wearing seat belts

编辑:chaxungu时间:2026-04-24 12:48:39分类:高中英语题库

A survey has shown that 40% of those killed in traffic accidents _________ if they had been wearing seat belts.
A.should have been savedB.must have been savedC.need have been savedD.could have been saved在线课程D