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There  is _______ “i”  in the word i phone  .  
#32987
A
a
B
an
C
the
D
/
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-You’re dropped __________ “s” in the word “across”.-Oh, you are right, __________ letter “s” should be doubled like this “cross”.
#33353
A
a, a
B
an, a
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 Look at      eraser on the floor. Whose is it?
#34077
A
a
B
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Would you please help me pick up ____umbrella on the floor?
#34322
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a
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Do you know how to learn English well as _________ second language? 
#32756
A
a
B
an
C
the
D
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_______ old man in front of Tom is _______ artist. 
#34248
A
An, an
B
A, the
C
The, an
D
The, a
不定冠词(a,an)
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