On arriving at the shore ,the girl struggled up the cliff towards the light she had seen.这句子后面的宾语从句为什么要用过去完成时had seen而不用一般过去时saw?

arriving at 和 arriving on 有什么区别啊? （）______the school,he saw his parents _______for him at the school gateA.At reaching;waited B.On arriving;waitingC.At arriving;waited D.On reaching;waiting arriving是不是 arrive的名词形式,sb's arrival和sb's arriving的区别,president george w bush's arriving at the tsinghua university in beijing on february 22,2002 was reported in yesterday's newspaper.这句话对吗？还是应该用arrival? On arriving at the shore the girl struggled up the cliff towards the light she had seen 这里on arriving 是表示状语还是从句 On arriving at the railway station,he found the train had left away.改错! “______ you give me a room for the night?” I asked on arriving at the hote on arriving at the hotel,i approached the r--- desk to check in “______ you give me a room for the night?” I asked on arriving at the hote 能不能说On arriving at the station,he found his wife waiting for him ＿＿＿at the hotel ,they had a hot bath .A.ArrivedB.On arriving C.On arrivedD.In arriving 请问选哪一个啊?为什么? It's my first day arriving at the earth tomorrow.Happy birthday to me… 英语翻译Please find attached the profile for the host family accepting the above student arriving 27th January on flight CA175 at 9:30amOur driver will meet the student at McDonald's Restaurant,North end arrivals hall,arriving approximately 1 hou On arriving at the shore,the girl struggled up the cliff towards the light she had seen. _______,his friends met him at the station.A.arriving in Chicago B.Arrived in Chicago C.On arriving in Chicago D.When he arrived in Chicago arriving in,arriving at造句 __________ arriving at the village,the soldier began to get in crops with the peasants.A.In B.On C.At D.For选什么?为什么? ----- arriving at station,the queen was welcomed by the peoplethere选项at for on in选出正确项，并说明理由 arriving at the playground,we learn that the football match had begun.arriving at the playground 在句中作什么成分