[音频]26. A) Monitor students’ sleep patterns.B) Help students concentrate in class.C) Record students’ weekly performance.D) Ask students to complete a sleep report.27. A) Declining health.B) Lack of attention.C) Loss of motivation.D) Improper behavior.28. A) They should make sure their children are always punctual for school.B) They should ensure their children grow up in a healthy environment.C) They should help their children accomplish high-quality work.D) They should see to it that their children have adequate sleep.