英语 九年级 选择题 较难 ★ 精品

现在完成时 — 英语选择题

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
Five years ago, people began dumping waste into a river. Since then, the water ___ much dirtier, and many fish ___. A. has become; have died B. became; died C. have become; has died D. has become; died