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题型：填空题 题类：常考题 难易度：困难
牛津上海版（深圳用）2017-2018学年小学英语六年级下册Unit 3 Our school in the future B同步练习
—Yes, there(be). But now there(be) not many trees.
—people(plant) more trees in the future?
—I don't know.
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