(2013·合肥一中二模)I don't know who invented ________ iphone，but I think it is ________ useful invention.
#7895
A
the；a
B
the；the
C
an；the
D
an；a
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Opening the door, Mrs．Summers found family of cats shut in the bathroom．
#9518
A
a; 不填
B
a; the
C
the; 不填
D
the; the
——What about _________ job? ——It’s too difficult _________ job for me.
#10220
A
the; a
B
the; the
C
a; the
D
a; a
Although she spent two weeks in__ hospital after the accident, she was always in __ good spirits.
#9129
A
the; the
B
不填 ;不填
C
a;; 不填
D
不填;the
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