He must have arrived home 30 minutes ago becuase the train was due at 5 and his home was within only a five minute walking (/driving) distance from the railway station.
【他绝对三十分钟之前到家了,因为火车预定是五点到,从车站到他家仅仅五分钟路程】
He must had arrived home 30 minutes ago. Because the train was supposed to arrive in 5 o'clock, and it only takes 5 minutes from railway station to his home.
最准确,请采纳,有问题追问,祝好!
【来自英语牛人团】
HE MUST ARRIVE HOME 30MINUTES AGO,THE TRAIN ARRIVES AT 5,IT TAKES 5 MINUTES FOR HIM TO GO HOME FROM THE STATION