Migraine, the most debilitating common form of headache, afflicts perhaps 18 million Americans, who collectively lose 64 million workdays a year, and they cost the nation $50 billion in medical expenses and lost work time. B (A) year, and they cost the nation $50 billion in medical expenses and lost (B) year and thus cost the nation $50 billion in medical expenses and lost (C) year, so as to cost the nation $50 billion in medical expenses and lost (D) year that costs the nation $50 billion in lost medical expenses and(B) (E) year, which thus cost the nation $50 billion in lost medical expenses and
看了以前的帖子 似乎也没个结果 翻出来 在讨论一下 我选C cost 的主语 不能是人阿~~ 那位强人帮我找找C的毛病... 感谢感谢... |