写保护自然的倡议短文 — 英语词汇题
题目
班级要出一期“Protect Nature”英文倡议墙报。请你从下列句子中选出三句，按“提出倡议—说明做法—发出号召”的顺序组成一篇简短倡议短文，将序号填入横线。① Let's save energy and keep our earth green! ② We can turn off the lights when we leave a room. ③ Nature gives us clean air and water, so we must protect it.