昨天他上课迟到了英语怎么翻译

A. 昨天因为交通拥堵，他们上学迟到了。把这句话翻译成英语

they were late for school Yesterday,because of the traffic congestion.

B. 他上课迟到了半小时用英语翻译

He arrived half an hours late for class.

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C. 他们昨天没有来上课用英语怎么说

they didn't go to classes yesterday