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They are having _______ dinner at  home.
#32625
A
a
B
the
C
/
D
an
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---Tony is_____active boy,but he has_____unhealthy lifestyle. - --Yes,you are right.    
#32974
A
a;a
B
an;an
C
an;a
D
a;an
This morning I have _______ art lesson. Art is _______ useful subject. 
#33421
A
a; a
B
an; an
C
a; an
D
an; a
 It’s _____ good idea to spell and pronounce new words aloud every day.
#32397
A
a
B
an
C
/
D
the
一What's behind          door? I can't open it.   一Let me see.Oh,there's a chair.  
#32341
A
a
B
an
C
the
D
/
--- Look at ______ moon high up in the sky .--- Oh, what ______ bright moon ! Let’s go out to enjoy the night, shall we?
#33719
A
a; the
B
the; a
C
不填; a
D
不填; the
不定冠词(a,an)
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