将下列句子中的汉语部分译成英语，注意使用适当的形式
The old woman feels    （疲劳） after a long walk.
His son has a          （头疼）.
I have a                  （嗓子疼）, so I can’t speak a word.
I brush my          （牙）twice a day.
The little boy eats too much. He has a          （肚子疼）