Justin had trouble ( )(understand) others when he first came

Justin had trouble ( )(understand) others when he first came when the news came that I had won the first When John came back ,he found the bag he had He had died when his mother came 这句对吗 When the first settlers came to North America they had to __ When he came back,he found the bag he had left ______ over t He ()when you came. He 【had left】谓语【 when he came in the classroom 】状语 短暂性动词只是不能 When ______ why he was late,he said he had missed the first When we came to the gate ,he stopped __me go in first .A.to When we came to the gate,he stopped ( ) me go in first. when we came to the gate,he stopped________me go in first.1