Question

I’ll take part in the boys’ ______ race this Friday.
A. 800 meters               B. 800-meters             C. 800-meter

Answer 1

C

试题分析：句意：-这周五，我将参加男子800米比赛。数词+名词（单数）构成复合形容词。如：a five-year plan一个五年计划；an 800-year building一栋八百年的建筑物。故选C。