根据句子意思和首字母，写出恰当的单词。
1.It's 12:00. I am very h____. I am going to eat a lot.
2.Be q____ . We can't talk in the library.
3.We should arrive at school on time. Don't be l____ for school.
4.The boys are very young but they are very c____ .

5.I am short but my brother is very t____.