When they arrived there,they discovered that everything had

When they arrived there,they discovered that everything had i____(tell)that they had already arrived When we ______,they ______ there for an hour.A.arrived;had b they ____ (welcome) by their friends when they arrived there when they arrived there ,they found some foreigner (shop)in They had got everything ready before i arrived. After he had 新概念的一句话they had just discovered that a prisoner had escaped. they find that thieves had taken almost everything away from They had hardly arrived when it began to snow.和They were abo We ( ) cotton when they arrived. when they (　　）there ,they saw many people. A.arrived in B.ar they had arrived just in time