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英语 高中 · 高二 沪教版 · 选择性必修第二册 单选题 ★★★☆☆ 编号 #10116
The roads ___ in 1990 last summer.
A. must be widened
B. were widened
C. have been widened
D. are being widened
章节：动词的语态 · 知识点：一般过去时的被动语态 · 标签：被动语态,语法
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