激光内雕机工作原理:when they arrived at the station,the train__(leave)

when they arrived at the station,the train__(leave) when they arrived at the station,the train__(leave) I arrived at the station ____. they arrived just before the football match began. they arrived just before the football match began. When he arrived, John went straight to the bank. When I arrived,the__[frighten]girl was crying. After they arrived, they found their parents had been taken away by force. They're making dumplings at home They sang at the concert for Charity.