should/shouldn't谈论环保行为 — 英语选择题

英语课上，老师要求把“禁止浪费水”的建议转述给同学。下列句子中 should/shouldn't 使用完全正确的一项是（　） A. We shouldn't leave the tap running after washing hands. B. We should leave the tap running after washing hands. C. We shouldn't to save water in our daily life. D. We should wasting water in our daily life.