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
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
B
“our astronauts desire to do”是主语从句，从句中缺少do的宾语