摘要： for a long time,but he tried to catch up with his classmates at last. A.Having been ill B.Being ill C.He was ill D.Though ill 解析:本题容易出错的原因就是考生常误认为考查分词短语作状语.其实认真研读句子可以发现but所起的作用.but连接并列句.因此答案应该选C.不妨再考虑一下.去掉but后情况又如何呢? 答案:C
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