单项选择题
Although Alice had expected her parents to be worried by her long, unexplained absence, both her mother and father seemed quite ______.
A．unavailable
B．undecided
C．unworried
D．unexpected
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单项选择题
India is ______ to China.
A．contagious
B．contiguous
C．contingent
D．contentious
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单项选择题
Do you mind ______ Go ahead. I don't mind.
A．turning on the fan
B．I turn on the fan
C．if I turn on the fan
D．to turn on the fan
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