根据音标和句意写单词。

1.We _____ come to the dancing club on Wednesdays .

2.It's good for our health to eat_____  every day .

3.You can find the books about animals on the _____over there .

4.My mother cooks dishes with a little _____ .

5.We need to eat food to get enough _____ .

简述线粒体的结构？