单项选择题

You should take more physical . Don' t always sit at the desk doing your ______.

A．exercise, exercises
B．exercise, exercise
C．exercise, exercise
D．exercises, exercises
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单项选择题
Though he was ______ in his later years ,Tom didn' t feel ______.
A．alone, lonely
B．lonely, alone
C．alone, alone
D．lonely, lonely
单项选择题
Rose asked her elder sister, Why is ______ mother out of work
A．×
B．the
C．our
D．a
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