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The Education Department says that school safety has set off alarm bells with fr

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The Education Department says that school safety has set off alarm bells with fr

The Education Department says that school safety has set off alarm bells with frequent reports of serious
accidents ________ students got injured or killed.[     ]A．after which  
B．in which
C．by which  
D．for which

试题答案

B

标签：alarmoffsetbellsreports

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