单项选择题

A working American has to work ____________ days a week in his working time.

A．seven
B．six
C．five
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单项选择题
In his spare time, an American usually ____________.
A．has a good rest
B．plays cards with their friends
C．gets some more money by working
单项选择题
After Robert was knocked down by the red car ____________.
A．he was unconscious for three days
B．he didn't feel anything wrong
C．he was taken home at once
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