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For married mothers, the time spend on child care increased to an average of 12.9 hours a week in 2009　　A B C D
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A．whatB．howC． why D． which
A．what
B．how
C． why
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Many parents feel they need to keep a closer eye to their children because of concerns about crime and school violence. A B C D
Many parents feel they need to keep a closer eye to their children because of concerns about crime and school violence.　　A B C D
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