Jumping out of _____ airplane at ten thousand feet is quite ______ exciting experience .
#9303
A
不填;the
B
不填;an
C
an;an
D
the;the
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I don’t think the experiment is ______ failure. At least we have gained ______ experience for future success.
#10382
A
不填;the
B
a; the
C
a ; 不填
D
不填; 不填
Many people have realized that they should go on _______ healthy diet and lose_______ weight after the Spring Festival.
#8688
A
a;/
B
the;the
C
/;the
D
/;a
I don’t know who invented __________ telescope, but I think it is __________ most useful invention.
#9523
A
the, the
B
the, a
C
a, the
D
a, a