As he reached ______ front door, Jack saw ______ strange sight.
#8519
A
the; a
B
a; a
C
the; /
D
/ ；a
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The China Education Expo 2010 provides visiting students with ________ wealth of information on ________ options open to them for overseas study．
#8794
A
a ; /
B
/ ; the
C
a ; the
D
/ ; /
Exploring ________ space is exciting, yet dangerous. There is _______need for both robots and humans for space exploration.
#8457
A
the; a
B
a; the
C
/; a
D
/; /
Mr. Joe, ________ professor at the University of Fribourg, is famous for his academic achievements in ________ World History.
#7653
A
the; /
B
the; a
C
a; the
D
a; /
I’m sorry. I was under ________impression that you were________general manager of your company.
#9025
A
an；/
B
/；a
C
an；a
D
the；/