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 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。