The Greens lived in a valley with high mountains around it.T

The Greens lived in a valley（山谷） with high mountains around it.There was a lake near their village.So some people liked to spend theit holiday in the cool and quiet place in summer.They could swim or fish there.Mr Taylor had a building by the lake.Some of the visitors stayed there.They could see the whole lake through the window or on its top.He could get a lot of money.But when winter came,it blew and snowed heavily.All the narrow roads were all covered with thick snow and ice.It was dangerous for the visitors to get there though it was a good place for skating.The villagers had to spend a cold and long winter.They had to stay in the houses until the next spring.They had nothing to do during the whole winter.Of course they felt tired.Some children went skating on the lake though it was very cold outside.
It was early winter.All the visitors left as soon as the first snow fell.The lake began to be covered with ice.After breakfast Bill wanted to go skating on the lake while Mike was busy reading a picture book.He asked his brother to go there with him together.
"The ice is thin,I think," said Mike."I have to finish reading the book this morning."
Bill didn't agree and went there alone.A few hours later lunch was ready,but Mr Taylors didn't find Bill.He asked Mike if he knew where the boy was.
"There're two possibilities(可能性) ,I think.He's skating on the lake if the ice is thick,or he's swimming in the lake!"