When is Labor Day in U.S.A.?A.The first Monday of May.B.The first Monday of September.C.Th
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When is Labor Day in U.S.A.?
A.The first Monday of May.
B.The first Monday of September.
C.The last Monday of May.
D.The last Monday of September.
请帮忙给出正确答案和分析,谢谢!
