问题
选择题
There is a _____ running track in our school. [ ]
A. 400-meters
B. 400-meter
C. 400 meter
D. 400 meters
答案
答案：B
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There is a _____ running track in our school. [ ]
A. 400-meters
B. 400-meter
C. 400 meter
D. 400 meters
答案：B