单项选择题

Questions 17-20 are based on the following passage. You now have 15 seconds to read Questions 17-20.
When did the Congress approve a bill to declare Labor Day a national holiday

A．1883.
B．1882.
C．1894.
D．1899.

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单项选择题

单项选择题

Questions 17-20 are based on the following passage. You now have 15 seconds to read Questions 17-20. When did the Congress approve a bill to declare Labor Day a national holiday 您的浏览器不支持 audio 元素。