"High school years are very 1.). years. You learn to get along with 2.) ; you learn to observe the rules 3.) _in simple courtesy and good sportsmanship whether 4.) the athletic field, in the 5.) or at a party. You will 6. seriously about your future and seek 7.) _ in choosing your courses. You will be asked to read 8.) and references, solve problems and 9.) compositions. I would strongly advice you, habits, schedule your activities then, to develop good 10.) and use your time wisely.