A．advantage
B．concern
C．benefit
D．importance
请帮忙给出正确答案和分析，谢谢！
【C19】A．advantageB．exceptionC．measureD．charge
【C7】A．concernsB．concernC．concerningD．concerned
【C4】A．disadvantageB．advantageC．benefitD．condition
【C7】A．issueB．concernC．certaintyD．accident
【C12】A．careB．concernC．attentionD．intention
【C18】A．profitB．joyC．benefitD．nightmare
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