作为一名有社会责任感的高中生,举手之劳可以做的有 ①用淘米水浇花 ②步行或骑自行车上学; ③用洗衣服的水冲厕; ④使用一次性餐具; ⑤大量互赠明信片贺卡; ⑥分类投放垃圾;⑦用塑料袋购物; ⑧使用节能灯 A.①③④⑥⑧ B.②③⑤⑥⑧ C.①②③⑥⑦ D.①②③⑥⑧I _____ the chairman's plan because it will save a lot of money once it is carried out.
[ ]A. bring B. hold C. support D. agree