20.---Hey, look at my shoes, look what you’ve done. ---Oh, I’m sorry I’ve got your shoes dirty.But I . A.haven’t noticed B.didn’t notice C.wasn’t noticing D.hadn’t noticed 查看更多

 

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---Hey, look at my shoes, look what you’ve done.

---Oh, I’m sorry I’ve got your shoes dirty.But I ______ .

A.haven’t noticed                                   B.didn’t notice

C.wasn’t noticing                              D.hadn’t noticed

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