根据句意，用括号内所给的适当形式填空。 1. There are a lot of new _________(factory) in our city. 2. Look at the sun. It always shines _________(bright) at this time of year. 3. Look! The people in the river _________(swim) 4. Miss Smith put the new dress on, and looked at _________(she) in the mirror. 5. Liu Zhong is in his _________(three) year at No.1 Middle school. 6. The teacher asked her students _________(not forget) to sweep the floor.. 7. I think the dictionary is _________(help) to your study. 8. Don't open your books. Please keep them _________(close) 9. There _________(be) great changes in our country since 1979. 10. If anyone is ill here, the doctor must _________(send) for.