Nowadays, lots of students in Shenzhen complain that they have too much homework. Because of this, they feel unhappy about learning at school. According to a survey, a pupil has to spend two hours finishing the homework every day. It usually takes three hours for a middle school student and four hours for a high school student to finish the homework every day. Students in Grade Nine often do their homework until midnight. And all of them have to get up at as early as six o'clock the next morning. Mr. Li, a doctor in a hospital, told me yesterday, "Half of the students in Shenzhen are sub-healthy . The lack   of sleep makes them tired and their health is becoming poorer and poorer." Many parents worry about _ . According to the passage, which of the following is TRUE?
A pupil usually has no homework in Shenzhen. Many students in Shenzhen want much homework. Students in Shenzhen have enough time to sleep. Students in Grade Nine often do their homework until 12:00 at night.