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After Yang Liwei succeeded in circling the earth, our astronauts desire to do is

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After Yang Liwei succeeded in circling the earth, our astronauts desire to do is

After Yang Liwei succeeded in circling the earth, _____ our astronauts desire to do is walk in space.  [上海2004]

A. where  B. what

C. that D. how

 

试题答案

B

考查主语从句。从句中动词do缺少宾语,故选what,what引导的从句在句中作主语。