单项选择题

______is our duty______ good service to customers.

A．
[A] That, to give

B．
[B] This, giving

C．
[C] It, to give

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单项选择题
The Olympic Games will be held in Beijing in______.
A．
[A] 2008 year

B．
[B] the year 2008

C．
[C] the 2008
单项选择题
My______ brother is three years ______than I.
A．
[A] older, elder

B．
[B] elder, elder

C．
[C] elder, older
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