—_____ do you go to the zoo with your brother?—Three times a month.
#32758
A
How long
B
How often
C
How old
D
How much
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The old man has__ __ useful horse and horse can do a lot of things for him.
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A
an; a
B
the; a
C
an; the
D
a; the
There is ________ useful book on the desk， _________ useful book belongs to my brother．
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A
a; the
B
an; the
C
a; an
D
an; a
--- The presidents of China and Russia had ____ interview a short time ago .--- And it was ____ great success. .
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A
an ;the
B
the ;a
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an;a
D
the ; /
_______ ship turned over and sank (沉没) off _______ island in South Korea on April16.
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A
The; the
B
The; an
C
A; the
D
A; an