阅读下面材料，在空白处填入适当的内容(1个单词)或括号内所给单词的正确形式。
Do you know growing pains? Growing pains aren't a disease.
Usually children can get them the ages of 3 and 5 or 8 and 12. Children often get growing pains in (they)legs They often start before bedtime and sometimes in the middle of the night. But they go away by the morning. Doctors don't know They only think when children run, climb or jump a lot during day, they may have pains at night.
Parents try to help children feel (well)Some parents may do this by (buy)some medicine. it is not good for children Here are some (way)that may help:
◇(put)a piece of warm cloth on the place where children feel painful.
◇Stretch(伸展)the legs like what they do in P. E. classes.
◇Ask somebody (help)massage(按摩)the painful legs.