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I.单项选择()1.—Lookatthesign.Itsays“NoSmoking”.——Ohsorry.Iit.(2015山东滨州)A.don'tseeB.haven’tseenC.wasn’tseenD.didn'tsee

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I .单项选择

( ) 1. —Look at the sign. It says “ No Smoking”.

——Oh sorry. I ____ it.(2015山东滨州)

   A. don't see   B. haven’t seen

   C. wasn’t seen   D. didn't see

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 D