高二英语翻译The young man struggle with his conscience before tell

高二英语翻译
The young man struggle with his conscience before telling the police that he was the murderer they were looking for.
John is not in a good mood, but your visit may cheer him up. He always said he missed you so much.
Immediately after the traffic accident, the ambulances(急救车）rushed the injured to the hospital.
As one of the important abilities of the modren people, we must learn to adapt ourselves to new circumstances.