How long does Elaine spend on after-class activities in a week?A、10 hours. B、15 hours.C、20 hours.D、45 hours.(2) [单选题]What was the percentage of part-time students employed last year?A、14%. B、40%.C、76%. D、36%.(3) [单选题]What does making a detailed timetable mean?A、Having every detail put into a calendar.B、Making a choice for what has to be done.C、Dividing the hours among study and work.D、Making a list of events to attend and clubs to join.(4) [单选题]Which of the following is Dr. Steven's advice?A、To go and watch a movie each week.B、To seize the opportunities that come her way.C、To make a choice between clubs and other activities.D、To keep one day a week to herself to enjoy her free time.