单项选择题

A．Ground travel can sometimes offer more services than air travel.
B．Ground travel can offer as much services as air travel.
C．Air travel offers more and better services than ground travel.
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A．Her mother.B．Her sister-in-law.C．Her aunt.
A．Her mother.
B．Her sister-in-law.
C．Her aunt.
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A．A fine boat．B．Their friend，Frank．C．The weather．
A．A fine boat．
B．Their friend，Frank．
C．The weather．
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