Wu Ding won the girl's _____ race in the school sports meeting last week.A.100 meter B.100 meters C.100-meters D.100-meter但是为什么不能用B?

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WuDingwonthegirl''s_____raceintheschoolsportsmeetinglastweek.A.100meterB.100metersC.100-metersD.100-m

Wu Ding won the girl's _____ race in the school sports meeting last week.A.100 meter B.100 meters C.100-meters D.100-meter但是为什么不能用B?
Wu Ding won the girl's _____ race in the school sports meeting last week.
A.100 meter B.100 meters C.100-meters D.100-meter
但是为什么不能用B?

Wu Ding won the girl's _____ race in the school sports meeting last week.A.100 meter B.100 meters C.100-meters D.100-meter但是为什么不能用B?
如果选B的话,应该是 100 meters long