根据短文内容及首字母提示，填写所缺单词，使短文意思完整。
Bill and Simon were good friends. One summer they were on h . They wanted to sail around the Caribbean Sea in their boat for two weeks.
During their trip, they saw many whales. Bill and Simon were very e because they had wanted to see them very much. Unluckily, w    they were watching them, the whales began to hit the side of the boat.
Suddenly, w    started coming in, and they knew that they were in trouble. They q jumped into the lifeboat before the boat sank(沉没)，and watched it disappear(消失) under the sea.
Luckily, they had enough food and water for about twenty d  . They also had a fishing line and a machine which could change sea water i     drinking water. These two things helped them to survive(存活) during their terrible experience.
For the next fifty days they caught about ten fish a day and a  them for meals. They saw about twenty ships, although they waved and shouted when the ships were passing, n      saw them. They were becoming weaker and weaker. Then, just as they were beginning to l  hope, a fishing boat saved them.