(2013·高考新课标全国卷Ⅱ)Four and  ________ half hours of discussion took us up to midnight,and  ________ break for cheese,chocolate and tea with sugar.
#7983
A
a;a
B
the;the
C
不填;the
D
a;不填
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Though he is __________ worker, he works very hard.
#9684
A
a common
B
an ordinary
C
a usual
D
a general