Module 1 Travel Unit 3 Language in use课程练习 I. 冠词填空。不需要的可以划X。[来源: ] 1. There is ______ picture of ______ elephant on _______ wall. 2. This 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. 5. Let’s go out for ______ walk. 6. It’s too hot. Open ______ door, please. 7. There is ______ woman over there. _______ woman is Meimei’s mother. 8. ______ sun rises in ______ east. 9. ______ Changjiang River is _______ longest river in _______ China. 10. Are you going to d