7. You will help me to do the dishes, won't you? .................................................................................. 8. He believes you, doesn't he? .................................................... 9. He must go out now, mustn't he? ............................................................. 10. The students are going to visit Hue citadel next summer, aren't they? ........................................................... 11. Does she have a lot of friends? .......................................................... 12. Have they been good at English for four years? ....................................................................................... 13. Did he play tennis yesterday? ......................................................