单项选择题

A．38 dollars.
B．48 dollars.
C．30 dollars.
D．13 dollars.
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单项选择题
A．Bob is very good at running,B．Bob works as a guard.C．Bob never skips the professor’s class.D．Bob is very smart.
A．Bob is very good at running,
B．Bob works as a guard.
C．Bob never skips the professor’s class.
D．Bob is very smart.
单项选择题
A．Forty or fifty minutes of exercise once a week.B．Twenty or thirty minutes of exercise every day.C．Fifteen or twenty minutes Of exercise five days a week.D．Thirty or forty minutes of exercise three or four days a week.
A．Forty or fifty minutes of exercise once a week.
B．Twenty or thirty minutes of exercise every day.
C．Fifteen or twenty minutes Of exercise five days a week.
D．Thirty or forty minutes of exercise three or four days a week.
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