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 My cousin went abroad at_____ age of eighteen.
#32271
A
a
B
an
C
the
D
不填
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There is ______ “b” and _______“s” in the word “bookcase”.
#33004
A
a; an
B
an; a
C
a; a
D
an; an
Please check your spelling carefully. You've dropped_______ "u" here.
#32863
A
a
B
an
C
the
D
／
This morning I have _______ art lesson. Art is _______ useful subject.
#33421
A
a; a
B
an; an
C
a; an
D
an; a
—Is it       apple?—Yes, it isn’t.
#34017
A
a
B
an
C
the
D
/
There is ________ useful book on the desk， _________ useful book belongs to my brother．
#32811
A
a; the
B
an; the
C
a; an
D
an; a