单项选择题

A．Make up homework problems.
B．Do research in the library.
C．Teach an introductory economics course.
D．Grade homework sets.
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单项选择题
A．Teacher.B．Taxi driver.C．Carpenter.D．Shoemaker.
A．Teacher.
B．Taxi driver.
C．Carpenter.
D．Shoemaker.
单项选择题
A．Watch less television.B．Return the television to the store.C．Pay for the television.D．Show the man how to use the television.
A．Watch less television.
B．Return the television to the store.
C．Pay for the television.
D．Show the man how to use the television.
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