Unit 2How often do you exercise,单元阅读清,一、完形填空。根据短文内容，从各题所给的四个选项中选择一个最佳答案。_1_ is a result of the student activity survey at our school. Most students exercise three or four times _2_ week. Some students exercise once _3_ twice a week. Some students exercise every day. _4_ homework, most students _5_ homework every day. Some students do homework three or four times a week. _6_ students do homework once or twice a week. The result for “watching TV” is _7_. Some students watch TV once o
