问题
选择题
The skating marathon _____ for five hours now, and several skaters are still skating. [ ]
A. has begun
B. has gone
C. has been going
D. has been
答案
答案：C
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The skating marathon _____ for five hours now, and several skaters are still skating. [ ]
A. has begun
B. has gone
C. has been going
D. has been
答案：C