冠词填空，在下列句中空白处填入适当冠词，不需用冠词处划×。
e is _______ picture of _______ elephant on _______ wall.
is _______ useful book.I've read it for _______ hour.
3. _______ elephant is much heavier than _______ horse.
4. _______ doctor told him to take _______ medicine three times _______ day.
's go out for _______ walk.
's too _______ door，please.
e is _______ woman over there. _______ woman is Meimei's mother.
8. _______ sun rises in _______ east.
9. _______ Changjiang River is _______ longest river in _______ China.
you going to do it _______ second time?
ington is _______ capital of _______ USA.
