33、On May1,1995, a new law was passed and we have been working five days a week          .

A.a(chǎn)go  B.since    C.before   D.now

33、B

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On May1,1995, a new law was passed and we have been working five days a week          .

A.a(chǎn)go  B.since    C.before   D.now

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