单项选择题

The helicopter could not land because ______.

A．the mountain was too high
B．the mountain sides were too steep
C．the runway was too narrow
D．the weather was very bad
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Rose asked her elder sister Why is ______ Mother out of work
A．×
B．the
C．our
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Would you do me ______ favour Do me ______ favour to turn on the TV.
A．a, the
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