阅读下面短文，根据所给情节进行续写，使之构成一个完整的故事。 After study for hours, I went outside and up to the roof nearby for a break and watched people swimming in the sea. It was a sunny day—a blue, cloudless sky over a calm sea. But then, as I looked in the distance. I discovered a series of three or four big waves heading towards the shore. I'd seen these mini-tsunamis (小型海啸)many times before. They were heading at speed in the direction of the swimming area. Most people knew to look out for them, but from the screams that started coming from the beach, I could tell someone was in trouble.
Without thinking, I ran down into the street, holding my bodyboard (冲浪板)on the way and shouted at a stranger to call the coastguard(海岸警卫). My neighbor Tom had heard the screaming as well and was also outside with his bodyboard, so together we rushed to the steps that led down to the sea.
Once we got closer, we discovered the waves had pulled a boy and a girl into the open sea. I knew that the nearest boat would take at least 30 minutes to reach us. I wasn't used to this sort of emergency—I'd never been trained as a lifeguard—but I didn't think twice about trying to save them.
I suppose in a way I wanted to impress everyone; at 19, a deal like that can seem like a good opportunity to show off.
Tom and I dived into the water and it took us 10 minutes to get to them. When we finally reached them, they were almost lifeless with only their heads coming in and out of the water. We could tell they were still alive from their small breaths but it was clear they wouldn't have been able to stay there much longer. I held the boy and pulled him over my board. Tom then moved the girl onto his board.
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We discussed pushing them back to the shore, but we were too far out.
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That night, word came from the hospital that the two kids were in good condition.
