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—Look! There is         beautiful rainbow in the sky．—Take the books for me, I’d like to take a photo of     rainbow before it disappears．
#33121
A
a; the
B
the; a
C
the; the
D
a; a
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It is _______ unusual thing for us to find ________ UFO.
#33317
A
a; a
B
an; an
C
a; an
D
an; a
— Look, that is ____ elephant.         —Yes, it’s very strong.
#33983
A
a
B
an
C
the
D
\
I am an_________ boy 
#34349
A
Chinese
B
Japanese
C
American
D
Brazilian
I have been living in London for more than ten years, so I have ________ good knowledge of this city.
#32611
A
/
B
the
C
a
D
an
 --- What color is your coat?--- It’s          orange. It’s           orange coat.
#32822
A
an,/
B
/, an
C
a, an
D
an, an