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.   

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。