英语 九年级 填空题 较难

现在进行时 — 英语填空题

人教版·英语(初中) Unit 13 We're trying to save the earth! AI 三重审校通过

题目
请用括号内动词的正确形式填空。Look! The river ___ (get) cleaner, volunteers ___ (collect) plastic bottles along the bank, and the nearby factory ___ (not pour) waste water into it now.