单项选择题

I don' t understand why you ______ the same mistakes.

A．keep to make
B．keeping to make
C．keep on make
D．keep on making
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The Great Wall, its one end ______ to the east of Beijing, lies across North China.
A．extending
B．extended
C．extends
D．is extended
单项选择题
Since your friend is visiting her family this evening, ______ you like to have dinner with as.
A．don't
B．didn't
C．won' t
D．wouldn' t
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