11. People should stop use so .. energy. (more / less / many / much) 12. Planting more .. to reduce pollution. (rice / flowers / trees / grass) 13. If he is so hungry, he . eat that cake. (does / do / will / wont) 14. If she vegetables in her garden, she will have clean vegetables. (grow / grew / growing / grows) 15....... means giving things to people in need. (Swap / Charity / Reuse / Recycle) 16. Yesterday we watched television all evening we didnt have anything to do. (when / because / while / although) 17. .. the Great Wall next week? (Will they visit / Do they visit / Are they visit / All are correct) 18. It . very cold yesterday. (are / is / was / were) 19. It will be good if students ........ to school by bus. (going / will go / goes / go) 20. Hurry up or you will .. late for school. (be / being / is / are)