题目

The eyes are the windows of the soul (心灵) . Having a pair of bright, clear eyes is very important, so we should protect our eyes throughout our lives.       9    Don’t read while lying down or walking. Relax after every hour of reading .Keep a distance from the TV set when you watch TV and give your eyes a rest every 30 minutes. Don’t stare at (盯着看) the sun or try to read in the darkness.    10    This can damage your eyes easily. Get your eyes checked often. Not many people have this habit, but it is necessary. If you feel that there is something wrong with David, ________ make trouble at school.A. can't B. don't C. doesn't