根据句意和汉语提示，写出相应的单词。

1. True friends must _______(分享) everything.

2. On her _______ (二十) birthday, she received a lot of presents from her friends.

3. Mary _______ (跌倒) over yesterday and hurt her leg badly.

4. English is the most _______ (广泛) used language in the world.

5. It's very important to keep _______ (健康).