Until 1954 it was thought that no man could run one mile in less than four minutes. As years 36 ,the record came closer and closer to four minutes 36.A.passed along B.passed down C.went by D.went over go for 主张 go for a walk 散步 go in for 参加,...
出差 be away on official business official business是公务的意思,away是离开,所以be away on official business是出差的意思。 go/be on a business trip business是商务、公事,trip...
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