完成句子。 1. Not only_____the students what they should do,but also make them know how to do.(teach) 老师不仅应该教学生们应该做什么,而且应该让他们知道怎么做。 2. The woman paid the boy ten dollars for washing ten windows, _____for a year.(clean) 这位妇女付给这个小男孩十美元让他清洗十个窗户,大部分的窗户已经一年没洗了。 3. Jiuzhaigou_____its unique natural scenery that tens of thousands of visitors from home and abroad are attracted there.(famous) 九寨沟以其独特的天然美景而闻名,吸引了数以万计的国内外的游客。 4. The statue, _____America's symbol-the Statue of Liberty,would stand in the Expo museum.(model) 这个以美国的象征--自由女神像而仿造的雕像将会站立在世博会博物馆前。 5. _____, we are always right here waiting for you.(whenever) 无论你什么时候回来,我们会一直在这等你。 6. Mary used to be shy,but since she went to college,she_____.(life) 玛丽过去很腼腆,但是自从她上了大学以来,她变得活跃起来。 7. When the boy first came to the army,he_____their arms together as they marched.(swing) 这个男孩第一次来到军队的时候,他看到士兵边行军边挥动胳膊。 8. _____, you still need a lot of luck in mountain climbing.(prepare) 无论你准备得多么充分,爬山时你仍然需要许多运气。 9. _____before you go on your business in Shanghai.(advance) 在你去上海经商前,提前预订一个房间。 10. _____, the teacher sang a funny song during the class.(amusement) 令我们非常愉快的是,老师在课上唱了一首有趣的歌曲。