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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 164

—The air is full of smoke and people are coughing.
—It will get worse________the government does something about the pollution.

A.but
B.unless
C.except
D.if
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—Theairisfullofsmokeandpeoplea