问题
选择题
It _____ Yang Liwei about 21 hours _____ the earth 14 times in his spaceship. [ ]
A. spent; circling
B. took; travelling
C. spent; to travel
D. took; to circle
答案
答案：D
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It _____ Yang Liwei about 21 hours _____ the earth 14 times in his spaceship. [ ]
A. spent; circling
B. took; travelling
C. spent; to travel
D. took; to circle
答案：D