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英语 初中 · 九年级 沪教版 · 九年级上册 单选题 ★★★★☆ 编号 #10047
These trees ___ already in spring.
A. plant
B. have been planted
C. has planted
D. have planted
章节：动词的语态 · 知识点：现在完成时的被动语态 · 标签：被动语态,语法
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