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。
“If mum finds out that I'm going to the beach, I'll be in big trouble.” I said to myself softly in a low voice.
I went downstairs slowly and tried to walk casually into the kitchen. As I was walking towards the back door, mum asked without looking up from her “dish-washing”, “Where are you going?” I answered back without hesitation,“ I am going to the garden to play.” After I got out of the kitchen, I breathed a sign of relief. My plan had worked out fine so far. I climbed the fence and jumped onto the muddy field next to my house and started running towards the bus stop at top speed,
After half an hour I was at the beach scanning the crowd for my friends, Jimmy and Bobby. Two young men were racing in the canoes (独木舟). After a while, I saw them near a coconut tree. I ran towards them and got into my swimming trunk (游泳裤). For about an hour, we played volleyball happily.
Suddenly, Bobby hit the ball too hard and the ball fell into the sea. Just as Bobby was going to pick up the ball, the tide came in and carried the ball further and further away from the shore. I wanted to show off my swimming skills so I declared to help get the ball for them.
I dived into the water and started swimming at a steady pace. After swimming for about ten minutes, I became tired but when I saw that the ball was only a few feet away from me, I put in an extra burst of speed. However, just as I was going to get the ball, a very strong current swept the ball further away from me. At that moment, a string of weed （海草）tangled (缠绕) up with my feet and I could not swim properly.
I struggled to keep afloat but it was no use. “ If I had listened to my parents, this would never have happened,” I thought silently.
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Finally, after struggling for a minute or two, I still got pulled underwater.
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When I woke up, I was in an empty room lying on a bed.
