6. My grandpa is the most conservative person in my family. He never ____ about way of life. A. gives his opinion B. changes his mind C. express his view D. keeps in mind 7. Anna often dresses ______ when going to the parties in order to attract her friends' attention. A. plainly B. properly C. flashily D. soberly 8. All students _______ wear uniforms at school because it is a rule. A. should B. have to C. ought to D. must 9. You ____ finish your homework before you go to bed. A. must B. have to C. could D. oughtn’t to.