用括号内所给动词的适当形式填空。 1. Many people decided ________ (move) to the countryside because of much air pollution in the city. 2. Liu Xiang ________ (get) a gold medal at Athens Olympic Games in 2004. 3. ________ (not stand) too close to the wild animals. It's dangerous. 4. Dolphins are friendly. If you ________ (fall) into the water, they may come up to help you. 5. My little brother kept ________ (ask) questions about the Talking Robot while we were in the Science Museum. 6. The students are very glad they ________ (visit) Mount Emei the day after tomorrow. 7. 'Everybody ________ (have) to hand in the composition in class.' said our teacher. 8. Please be quiet! We ________ (listen) to the songs sung by the 'Super Girl' Li Yuchun. 9. In the last several years we ________ (set) up many new factories in our home town. 10. Great changes have already taken place in Yancheng. A second expressway (高速公路) ________ (build) through the city a few years after the first one was done.