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Do you think Maths __________ useful subject? 
#33851
A
is a
B
is an
C
are a
D
are an
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Andrew’s singing ______ song.It's _______ American song.
#33766
A
a, a
B
a, an
C
an, a
D
an, the
Tom likes playing _____ basketball very much, but he doesn’t like ______ basketball I bought him yesterday. 
#34131
A
/; the
B
the; the
C
the; a
D
the; /
---Why not take ____ umbrella with the sign “Made in China”? It’s ____ useful one.--- What ____ good advice.
#33345
A
an; an; a
B
an; a; \
C
a; an; a
D
\; an; a
--Do you play _______ piano in your free time?---No, I like sports. I often play______ soccer with my friends.
#34593
A
/; the
B
the ;/
C
the ; the
D
a; a
My brother wants to be ______ engineer when he grows up.
#33689
A
a
B
an
C
the
D
/
不定冠词(a,an)
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