单项选择题

To take care of a light house, one must ______.

A．clean the windows around the light
B．sweep the ice and snow in the street
C．burn the candles
D．entertain the visitors
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单项选择题
What are the two speakers doing while having this conversation
A．They are visiting a lighthouse.
B．They are rowing a boat.
C．They are lightening a candle.
D．They are having lunch.
单项选择题
Why did the student come to see Mr. Green
A．He wanted to ask for a sick leave.
B．Mr. Green is teaching him economics.
C．He wanted to hand in the term paper.
D．He needs an extension for a paper.
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