1 . You need to ________(注册) before you come inside the library. (根据汉语提示单词拼写)

2 . The team was going to ________(探索) the wild mountain lying in the west. (根据汉语提示单词拼写)

3 . The first step of the experiment is to ________ (煮开) the ________ (液体) for 20 minutes until it has been reduced by half. (根据汉语提示单词拼写)

4 . We are ready to s________on the sea. (根据首字母单词拼写)

5 . His biggest dream is to _________________ (参加) the Olympic Games. (根据汉语提示完成句子)

6 . To _______________ (保持健康), we often take part in physical exercise. (根据汉语提示完成句子)

7 . 如果我们尽力回收废物，我们可以减少污染，保护自然资源。
If we try our best to____________the wastes, we can reduce pollution and conserve natural____________.

9 . They decided to ________(原谅) one another and try to rebuild their relationship. (根据汉语提示单词拼写)

10 . It’s recorded that it took Christopher Columbus more than two months to s______ across the Atlantic Ocean in 1492. (根据首字母单词拼写)