Each of the following sentences has ONE mistake. Underline the mistake, then correc 1. My father has suffered from sleepless for the past few months. 2. The advanced students select to take part in the annual International Olympic Competi 3. The students in my class are going to be organized a surprise party tomorrow evening 4. “All right. I am going to help you with your project,” Jim said to us. 5. You should do regularly exercise to improve your health. He looked nervous over his shoulder, making sure no one else was listening. Little Tom was punished by his teacher for doing so much noise in class. That was the most frightening film that I have ever seen. The number of homeless people have increased dramatically during the last few me Littering is a bad habit because it makes the environment pollution.