请在下方输入要搜索的题目：

20 Working hours in the United States A over the past 20 years.A、have increasedB、increasedC、were increasingD、have been increased

20 Working hours in the United States ______ A ______over the past 20 years.
A、have increased
B、increased
C、were increasing
D、have been increased

发布时间：2025-06-28 02:12:40

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答案：A,C

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20 Working hours in the United States ______ A ______over the past 20 years.A、have increasedB、increasedC、were increasingD、have been increased