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试题详情及答案解析
The doctors in Beijing did all they______ to save Shao Zhanwei, mayor of Hangzhou, but he still died of heart attack at the age of 58.
A.wouldB.could
C.mustD.might
答案:B
试题分析:句意,北京的医生们尽他们最大的努力救杭州市长的性命,但是他还是死于心脏病,享年58岁。do all sb can to do,did all sb could to do ,是尽某人所能去做某事的意思,故选择B。
考点:考查情态动词。