IV. Complete the sentence with “must, mustn’t, should, shouldn’t” 1. Children …………………… spend too much time playing video games. 2. Students ……………………finish their homework before watching TV. 3. We …………………… go to school or work by bus. 4. He …………………… take part in activities with their friends. 5. You …………………… keep off the grass. 6. Children …………………… play in the street. 7. Tim ……………………come home before 10 o’clock. 8. They …………………… eat less last food because it is good for their health.