试题 试卷
题型：单选题 题类：常考题 难易度：困难
山东省滨州市集团校2019-2020学年九年级上学期英语期中测试卷（含听力材料）
—Yes. I hope to plant trees. trees, air pollution.
— It's very simple. ____________ you work, ____________ grades you'll get.
试题篮
