单项选择题

A．To keep her carpet clean.
B．To protect her carpet.
C．To avoid tripping on the carpet.
D．To keep their feet warm.
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单项选择题
A．Empty bottles.B．Bottle glass.C．A: Garbage from food.D．Old ears.
A．Empty bottles.
B．Bottle glass.
C．A: Garbage from food.
D．Old ears.
单项选择题
A．Less than one year.B．Four years.C．Five years.D．More than five years.
A．Less than one year.
B．Four years.
C．Five years.
D．More than five years.
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