The news on ___ air reminded him of ____ old friend who is now in America.
#9430
A
不填; an
B
不填; the
C
the; an
D
the; a
It takes us ________ hour or more to go to my hometown by ________ train.
#9446
A
an; a   
B
a; an   
C
a; / 
D
an; /
不定冠词
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